Kevin M Bernatz

US Patent 11169402 Superlattice material, and preparation method and application thereof

US Patent 11170813 Magnetic powder, method of producing the same, and magnetic recording medium

US Patent 7087290 Data storage media utilizing a substrate including a plastic resin layer, and method thereof

US Patent 7087324 Magnetoresistive spin-valve sensor and magnetic storage apparatus

US Patent 7090933 Magneto-optical recording medium including a soft magnetic layer, a protective layer and a silane coupling agent layer, in this order

US Patent 7094478 Magnetic damping

US Patent 7094480 Magnetic field sensor using magnetoresistance and method for making same

US Patent 7097923 Method for forming thin film heads using a tri-layer anti-reflection coating for photolithographic applications and a structure thereof

US Patent 7101633 Electroplated magnetic thin film, method of manufacturing the same, electroplating bath and thin film magnetic head

US Patent 7105238 Master information carrier for magnetic transfer

US Patent 7115328 Master disk for transferring magnetic pattern and magnetic recording medium

US Patent 7115330 Magnetic recording medium with CR <110> preferred growth along a predetermined direction, method of producing the same and magnetic storage apparatus

US Patent 7115331 Magnetic recording medium having narrow pulse width characteristics

US Patent 7118814 Apparatus and method for step-stabilization of GMR-based read sensors

US Patent 7118815 Method to improve coercivity radial profile in magnetic recording media and product thereof

US Patent 7125616 Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers

US Patent 7128986 Nanoclustered magnetic materials for high moment write pole applications

US Patent 7132175 GMR magnetic detecting element comprising current limiting layer provided in free magnetic layer and method of manufacturing the detecting element

US Patent 7132176 Perpendicular magnetic recording medium and magnetic recording/reproduction apparatus

US Patent 11175358 Magnetic sensors with a mixed oxide passivation layer

US Patent 7138176 Transparent, low-flammability, UV-resistant film made from a crystallizable thermoplastic, its use and process for its production

US Patent 7138193 Data storage medium with laterally magnetized pad and method for making same

US Patent 7138195 Perpendicular magnetic recording media and magnetic storage

US Patent 7141311 Ferrite thin film for high frequency and method for preparation thereof

US Patent 7141314 CPP GMR and magnetostriction improvement by laminating Co

US Patent 7147944 Substrate for magnetic recording media using dried thermoplastic norbornene resin and magnetic recording media using substrate

US Patent 7153597 Magnetic recording media having chemically modified patterned substrate to assemble self organized magnetic arrays

US Patent 7157160 Magnetic thin film and method of manufacturing the same

US Patent 7157162 Magnetic recording medium and magnetic recording and reproducing apparatus

US Patent 7163755 Magneto-resistive element

US Patent 7166375 Magnetic recording medium utilizing a multi-layered soft magnetic underlayer, method of producing the same and magnetic recording and reproducing device

US Patent 7166376 Magnetic recording medium including a high-magnetostriction layer and magnetic recording/reproducing apparatus

US Patent 7172824 Laminated perpendicular magnetic recording media with uncorrelated grains

US Patent 7175926 Dual-layer carbon-based protective overcoats for recording media by filtered cathodic ARC deposition

US Patent 7175927 Magnetic recording medium utilizing specified non-magnetic particles in the magnetic layer

US Patent 7179551 Poly(arylene ether) data storage media

US Patent 7186470 Use of greater than about 15 angstrom thick coupling layer in AP-tab magnetic head

US Patent 7186472 Magnetic recording medium

US Patent 7195827 Perpendicular magnetic recording medium

US Patent 7195828 Lubricant for magnetic recording medium and use thereof

US Patent 7201977 Anti-ferromagnetically coupled granular-continuous magnetic recording media

US Patent 7208236 Magnetic recording medium with multi-portion carbon-based protection layer, and apparatus thereof

US Patent 7211339 Highly conductive lead adjoining MR stripe and extending beyond stripe height at junction

US Patent 7211340 Thin film structures providing strong basal plane growth orientation and magnetic recording media comprising same

US Patent 7217467 Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus

US Patent 7220482 Aligned fine particles, method for producing the same and device using the same

US Patent 7220498 Tunnel magnetoresistance element

US Patent 7220499 CPP giant magnetoresistive head having antiferromagnetic film disposed in rear of element

US Patent 7223485 Magnetoresistive device, magnetoresistive head and magnetic recording-reproducing apparatus

US Patent 7229706 Magnetic detecting element having pinned magnetic layers disposed on both sides of free magnetic layer

US Patent 7232621 Method of patterning magnetic products using chemical reaction

US Patent 7235296 Formulations for coated diamond abrasive slurries

US Patent 7235313 Magneto-optical recording medium, method of manufacturing magneto-optical recording medium, method of recording on magneto-optical recording medium, and method of reproduction from magneto-optical recording medium

US Patent 7238439 Magnetic recording medium containing particles with a core containing a Fe

US Patent 7239483 Magnetic disk with specified contact ratio [BH 1.0 nm] and circumferential texturing and magnetic disk apparatus equipped with magnetic disk

US Patent 7241514 Magneto-resistive device, and magnetic head, head suspension assembly and magnetic disk apparatus using magneto-resistive device

US Patent 7241515 Electrode layer for thin-film magnetic heads

US Patent 7241519 Magnetic recording medium with columar magnetic layer

US Patent 7244522 Lubricant for magnetic recording medium and use thereof

US Patent 7247396 Highly oriented perpendicular magnetic recording media

US Patent 7248447 High Hc pinned self-pinned sensor

US Patent 7248448 Magnetoresistance effect element, magnetic head, magnetic head assembly, magnetic storage system

US Patent 7252897 Magnetic recording disk and process for manufacture thereof

US Patent 7259935 Magnetic tape including an intermediate layer consisting essentially of a binder

US Patent 7265950 Magnetoresistance effect element, its manufacturing method, magnetic reproducing element and magnetic memory

US Patent 7267757 Magnetic head utilizing a CoNiFe alloy with 60-80 weight percent Fe and method for production therefor

US Patent 7267866 Heat control method and heat controller

US Patent 7270896 High performance magnetic tunnel barriers with amorphous materials

US Patent 7271984 Magnetic recording medium having at least two coupled magnetic layers, magnetic storage apparatus and recording method

US Patent 7272915 Shingle and mat tensile strength with urea formaldehyde resin modifier

US Patent 7277254 Magnetic recording disk and process for manufacture thereof

US Patent 7279240 Laminated perpendicular magnetic recording media with uncorrelated grains

US Patent 7280320 Thin-film magnetic head and manufacturing method thereof

US Patent 7282279 Magnetic recording medium including a radiation-cured material layer having a specified structure and composition

US Patent 7283320 Magnetic recording medium including servo and data bands in the magnetic layer

US Patent 7285338 Anisotropic thin-film rare-earth permanent magnet

US Patent 7288333 Magnetic film and thin film magnetic head using this magnetic film

US Patent 7289298 Perpendicular magnetic recording medium, method for manufacturing the same, and magnetic recording/reproducing apparatus

US Patent 7289303 Spin valve sensors having synthetic antiferromagnet for longitudinal bias

US Patent 7291409 Magnetic recording medium using magnetic powder having a core portion and an outer layer portion including a rare earth element and magnetic recording cassette

US Patent 7294418 Magnetic film for magnetic head

US Patent 7298588 Magnetic recording media using directly textured glass

US Patent 7300711 Magnetic tunnel junctions with high tunneling magnetoresistance using non-bcc magnetic materials

US Patent 7300712 Magnetic sensor and position detector

US Patent 7311983 Perpendicular magnetic recording medium and a method for manufacturing the same

US Patent 7314675 Magnetic media with high Ms magnetic layer

US Patent 7316852 Perpendicular magnetic recording media

US Patent RE40039 Aromatic polyamide resin moldings, production methods thereof, and magnetic recording medium produced therefrom

US Patent 7344786 Magnetic recording medium including a smooth coating layer on one side of the support

US Patent 7351483 Magnetic tunnel junctions using amorphous materials as reference and free layers

US Patent 7355813 Method of fabricating a narrow projection such as a write pole extending from a substrate

US Patent 7355824 Magnetoresistive effect element and magnetic memory having the same

US Patent 7357995 Magnetic tunnel barriers and associated magnetic tunnel junctions with high tunneling magnetoresistance

US Patent 7357997 Powder for underlayer of coating-type magnetic recording medium and magnetic recording medium comprising the same

US Patent 7361422 Leader tape and magnetic tape cartridge using the same

US Patent 7362546 Spin-valve magnetoresistive element having fixed magnetic layer of epitaxal laminate including magnetic layer and nonmagnetic layer

US Patent 11183215 Thin-film crystalline structure with surfaces having selected plane orientations

US Patent 7369336 Master carrier for magnetic transfer

US Patent 7369373 CPP GMR with hard magnet in stack bias layer

US Patent 7371472 Permanent magnet ring

US Patent 7371474 Advanced lubricant for thin film storage medium

US Patent 7374826 Structures producing a magnetic field with a gradient and a planar magnetic field source

US Patent 7378164 Soft underlayer structure for magnetic recording

US Patent 7381481 Magnetic tape having controlled heat-shrinkage and humidity expansion with two or more column-like magnetic layers

US Patent 7390584 Spin dependent tunneling devices having reduced topological coupling

US Patent 7391592 Magnetic recording medium including a diamond-like carbon protective film and at least two additional elements

US Patent 7399534 Structures producing a magnetic field with a gradient and a cylindrical magnetic field source

US Patent 7399539 DWDD-type magneto-optic recording medium including buffer regions between recording track regions and method of producing the same

US Patent 7402348 Perpendicular magnetic recording medium

US Patent 7410708 Magnetic reproducing method and magnetic recording medium

US Patent 7419730 Magnetic recording disk with antiferromagnetically coupled master layer including copper

US Patent 7422808 Vertical magnetic recording medium, magnetic recording apparatus and manufacturing method of a vertical magnetic recording medium

US Patent 7425377 Incoherently-reversing magnetic laminate with exchange coupled ferromagnetic layers

US Patent 7427446 Magnetic recording medium with antiparallel magnetic layers and CrN based underlayer, magnetic storage apparatus and method of producing magnetic recording medium

US Patent 7429427 Granular magnetic recording media with improved grain segregation and corrosion resistance

US Patent 7431993 Recording medium with glossy coating containing alumina

US Patent 7438982 Magnetic recording medium including disk substrate, magnetic layer, and non-magnetic layer

US Patent 7445858 Magnetic recording medium using magnetic powder having a core portion and an outer layer portion including a rare earth element and magnetic recording cassette

US Patent 7446985 Epitaxial oxide cap layers for enhancing GMR performance

US Patent 7449256 Method and system for magnetic recording using self-organized magnetic nanoparticles

US Patent 7459218 Rewritable thin image display sheet, image display, and image display system

US Patent 7459221 Magnetic film composed of a first alloy film including iron and platinum or iron and palladium

US Patent 7459222 Magnetoresistive medium including nanowires

US Patent 7465502 Composite magnetic recording structure having a metamagnetic layer with field induced transition to ferromagnetic state

US Patent 7468214 Tilted magnetic recording media

US Patent 7470474 Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus including both oxide and non-oxide perpendicular magnetic layers

US Patent 7473478 Oscillator

US Patent 7485378 Magnetic thin film head

US Patent 7494724 Magnetoresistance effect element, its manufacturing method, magnetic reproducing element and magnetic memory

US Patent 7494726 Perpendicular magnetic recording medium, method of manufacturing same, and magnetic recording device

US Patent 7498091 Recording medium including a first and second print layer with a controlled inclination angle and method of making the same

US Patent 7510788 Perpendicular magnetic recording medium utilizing a first cobalt magnetic layer and a second Pd-SiO

US Patent 7510790 Magnetic powder, method for producing the same and magnetic recording medium comprising the same

US Patent 7514160 Tunnel magnetoresistance element having a double underlayer of amorphous MgO and crystalline MgO(001)

US Patent 7514161 Laminated antiferromagnetically coupled media with decoupled magnetic layer

US Patent 7514162 Perpendicular magnetic recording medium with metamagnetic antiferromagnetically-coupled layer between the soft underlayer and recording layer

US Patent 7515380 Magnetic head and method for production therefor

US Patent 7515383 Magnetic recording medium

US Patent 11189311 Magnetic tape having characterized magnetic layer, magnetic tape cartridge, and magnetic tape device

US Patent 11189312 Adhesive layer for bonding noble metal structure with a dielectric layer

US Patent 7517598 Magnetic recording medium utilizing specified non-magnetic particles in the magnetic layer

US Patent 7521136 Coupling enhancement for medium with anti-ferromagnetic coupling

US Patent 7524570 Perpendicular magnetic recording system and medium with high-moment corrosion-resistant “soft” underlayer (SUL)

US Patent 7527881 Cleaning medium

US Patent 7529065 Laminated magnetic thin films with weak antiferromagnetic coupling for perpendicular magnetic recording

US Patent 7531043 Magnetic disk substrate and production method of magnetic disk

US Patent 7531248 Perpendicular recording magnetic media having a granular magnetic recording layer and an amorphous soft underlayer

US Patent 7531252 Film and magnetic-recording medium using the same

US Patent 7532436 Magnetic recording medium and magnetic memory device for high density recording

US Patent 7537845 Perpendicular magnetic recording media

US Patent 7537846 Magnetic disk, method of manufacturing the magnetic disk and method of evaluating the magnetic disk

US Patent 7544428 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof

US Patent 7547480 Magnetic tunnel junction pressure sensors and methods

US Patent 7550210 Perpendicular magnetic recording medium with multiple exchange-coupled magnetic layers having substantially similar anisotropy fields

US Patent 7550212 Tape-shaped recording medium, and apparatus and method for processing the same

US Patent 7553537 Position identification pattern

US Patent 7556869 Electronic device and wiring with a current induced cooling effect, and an electronic device capable of converting a temperature difference into voltage

US Patent 7556870 Antiferromagnetically coupled media for magnetic recording with weak coupling layer

US Patent 7556871 Magnetic recording medium containing first and second recording layers, each layer containing a columnar structure

US Patent 7563521 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof

US Patent 7563522 Magnetic recording medium

US Patent 7564648 Magnetic film for magnetic device

US Patent 7567412 Magnetic sensing element with improved magnetic sensitivity stability and method for producing the same

US Patent 7572527 Perpendicular magnetic recording medium with improved antiferromagnetically-coupled recording layer

US Patent 7572528 Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproduction apparatus

US Patent 7573663 Master carrier for magnetic transfer, magnetic transfer apparatus, and magnetic transfer method

US Patent 7584631 Member for supporting magnetic disc substrates, process of producing the same, and magnetic disc device using the same

US Patent 7585576 Magnetic recording medium with dual magnetic layers including specific resins

US Patent 7588840 Magnetic thin film and method of forming the same, magnetic device and inductor, and method of manufacturing magnetic device

US Patent 7588843 Magnetic recording medium and method of making the same

US Patent 7592079 Method to improve remanence-squareness-thickness-product and coercivity profiles in magnetic media

US Patent 7597972 Magnetic recording medium including a patterned intermediate layer and a non-patterned soft magnetic layer and manufacturing method thereof

US Patent 7601412 Information recording medium, information reproduction method and information recording method

US Patent 7601443 Perpendicular magnetic recording media with laminated soft magnetic underlayer

US Patent 7601444 Perpendicular magnetic recording medium

US Patent 7604878 Magneto-optical recording medium and layer structure

US Patent 7604880 Information recording medium

US Patent 7604881 Highly tetrahedral amorphous carbon coatings and systems and methods for their production

US Patent 7604882 Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate

US Patent 7606010 Mg-Zn oxide tunnel barriers and method of formation

US Patent 7608346 Magnetic field sensor

US Patent 7608349 Polyester film for recording medium and magnetic recording tape

US Patent 7611783 Magnetic recording medium and magnetic recording device

US Patent 7615292 Magnetic recording medium

US Patent 7625640 Electromagnetic noise suppressor, structure with electromagnetic noise suppressing function, and method of manufacturing the same

US Patent 7625643 Magnetic recording medium, magnetic storage apparatus and recording method

US Patent 7635529 Substrate for magnetic recording media, magnetic recording media and magnetic recording apparatus

US Patent 7638210 Perpendicular magnetic recording medium with exchange-coupled magnetic layers and improved coupling layer

US Patent 7645528 Magnetic recording media with ultra-high recording density

US Patent 7648774 Ferrite thin film, method of manufacturing the same and electromagnetic noise suppressor using the same

US Patent 7651793 High density recording medium with super-resolution near-field structure manufactured using high-melting point metal oxide or silicon oxide mask layer

US Patent 7651794 Adhesion layer for thin film magnetic recording medium

US Patent 7652852 Magnetoresistance effect device and a preform therefor

US Patent 7654884 Method of polishing end surfaces of a substrate for a recording medium by a grain flow processing method

US Patent 7662493 Magnetic disk substrate and production method of magnetic disk

US Patent 7670693 Magnetic recording medium possessing a columnar structure

US Patent 7674535 Magnetic transfer master disk, its manufacturing method and magnetic transfer method

US Patent 7678475 Spin-torque devices

US Patent 7678476 Composite heat assisted magnetic recording media with temperature tuned intergranular exchange

US Patent 7684161 Methods and apparatus for a synthetic anti-ferromagnet structure with reduced temperature dependence

US Patent 7687157 Perpendicular recording media having an exchange-spring structure

US Patent 7691499 Corrosion-resistant granular magnetic media with improved recording performance and methods of manufacturing same

US Patent 7691500 Perpendicular magnetic recording medium

US Patent 7700204 Magnetic recording medium containing particles with a core containing a FE

US Patent 7700205 Process for manufacturing glass substrate for magnetic recording medium, glass substrate for magnetic recording medium obtained by the process, and magnetic recording medium obtained using the substrate

US Patent 7704613 Magnetic recording medium for high density recording

US Patent 7709107 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof

US Patent 7709108 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof

US Patent 7709109 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof

US Patent 7709110 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof

US Patent 7709111 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof

US Patent 7709112 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof

US Patent 7718279 Epitaxial ferromagnetic Ni

US Patent 7718282 Magnetic recording medium with corrosion resistance and manufacturing method

US Patent 7727645 Substrate for magnetic recording medium, magnetic recording medium, and magnetic recording and reproducing apparatus

US Patent 7732005 Method for producing recording medium, recording medium employing said method, and information recording and reproducing apparatus

US Patent 7736766 Magnetic storage media with Ag, Au-containing magnetic layers

US Patent 7736770 Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate

US Patent 7749559 Method for manufacturing a surface-treated silicon substrate for magnetic recording medium

US Patent 7754353 Method and structure for ultra-high density, high data rate ferroelectric storage disk technology using stabilization by a surface conducting layer

US Patent 7754354 Patterned medium and method of manufacturing the same

US Patent 7754356 Glass for data storage medium substrate, glass substrate for data storage medium and magnetic disk

US Patent 7755929 Spin-injection device and magnetic device using spin-injection device

US Patent 7758981 Method for making a master disk for nanoimprinting patterned magnetic recording disks, master disk made by the method, and disk imprinted by the master disk

US Patent 7780504 Method for manufacturing disk-substrates for magnetic recording media, disk-substrates for magnetic recording media, method for manufacturing magnetic recording media, magnetic recording media, and magnetic recording device

US Patent 7781043 Disk roll and base material for disk roll

US Patent 7781078 Method and system for magnetic recording using self-organized magnetic nanoparticles

US Patent 7781080 Perpendicular magnetic recording medium

US Patent 7794861 Patterned media, method of manufacturing magnetic recording medium, and method of manufacturing a base

US Patent 7799445 Perpendicular magnetic recording media with soft magnetic underlayer

US Patent 7803472 Substrate glass for data storage medium and glass substrate

US Patent 7813202 Thin-film magnetic device with strong spin polarization perpendicular to the plane of the layers, magnetic tunnel junction and spin valve using such a device

US Patent 7833639 Magnetic recording medium and method for manufacturing magnetic recording medium

US Patent 7833640 Intermediate tri-layer structure for perpendicular recording media

US Patent 7838067 Method for producing single-sided sputtered magnetic recording disks

US Patent 7838136 Glass for information recording media substrate, glass substrate for magnetic disk and magnetic disk

US Patent 7842409 Anti-ferromagnetically coupled perpendicular magnetic recording media with oxide

US Patent 7851076 Method of fabricating silicon substrate for magnetic recording media, and magnetic recording medium

US Patent 7855002 Magnetic disk substrate and magnetic recording medium thereof

US Patent 7857680 Method for producing glass substrate for magnetic disk, and magnetic disk

US Patent 7862912 Perpendicular magnetic recording medium and system with low-curie-temperature multilayer for heat-assisted writing and/or reading

US Patent 7867638 Magnetic recording medium, method for producing thereof, and magnetic recording and reproducing apparatus

US Patent 7875371 Perpendicular magnetic recording medium, manufacturing process of the same, and magnetic recording/reproducing apparatus using the same

US Patent 7875374 Substrate for perpendicular magnetic recording media and perpendicular magnetic recording media using same

US Patent 7879466 Perpendicular magnetic recording medium, and perpendicular magnetic recording and reproducing apparatus

US Patent 7879471 Support for magnetic recording medium, and magnetic recording medium

US Patent 7882709 Glass substrate for an information recording medium, method for manufacturing a glass substrate for an information recording medium, and an information recording medium

US Patent 7887939 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof

US Patent 7891212 Magnetic disk glass substrate

US Patent 7892663 Perpendicular magnetic recording media and magnetic storage apparatus using the same

US Patent 7897274 Magnetoresistive device, magnetoresistive head and magnetic recording-reproducing apparatus

US Patent 7901803 Perpendicular magnetic recording medium, manufacturing method therefor, and magnetic read/write apparatus using the same

US Patent 7910234 Magnetic recording medium having improved durability for high density applications

US Patent 7914915 Highly charged ion modified oxide device and method of making same

US Patent 7914916 Thermally stable high anisotropic high magnetic moment films

US Patent 7923133 Coatings and methods for particle reduction

US Patent 7923134 Perpendicular magnetic recording medium, method of manufacturing the same, and magnetic recording device

US Patent 7923135 Magnetic recording medium having a patterned exchange-coupling control layer and method of manufacturing same

US Patent 7931976 Magnetic recording element

US Patent 7935435 Magnetic memory cell construction

US Patent 7937967 Method of manufacturing a glass substrate, glass substrate manufactured by the method, and magnetic recording medium using the glass substrate

US Patent 7939188 Magnetic stack design

US Patent 7955723 Magnetic recording medium substrate and perpendicular magnetic recording medium

US Patent 7960044 Patterned-media perpendicular magnetic recording disk with servo regions having magnetized servo pillars and oppositely-magnetized servo trenches

US Patent 7960045 Magnetic recording medium and method of manufacturing the same

US Patent 7964297 Adhesion layer for thin film magnetic recording medium

US Patent 7964298 Glass for chemical strengthening, substrate for information recording media and information recording media

US Patent 7972715 Glass substrate and thermal-assisted magnetic recording disk

US Patent 7976965 Magnetic recording medium and magnetic recording and reproducing device

US Patent 7976967 Glass substrate for magnetic disk apparatus

US Patent 7981533 Method for making a master disk for nanoimprinting patterned magnetic recording disks and master disk made by the method

US Patent 7985494 Glass substrate for magnetic disk and magnetic disk apparatus

US Patent 7989096 Perpendicular recording media having an exchange-spring structure

US Patent 7989099 Information medium substrate and information medium

US Patent 7993762 Magnetic thin film and method of manufacturing the same, and various application devices using the same

US Patent 7993765 Perpendicular magnetic recording medium