Sumitomo Metal Industries

US Patent 7086450 Continuous casting method, continuous casting apparatus and continuously cast steel slab

US Patent 7093469 Manufacturing method and manufacturing apparatus of pipe, thickness deviation information derivation apparatus, and computer program

US Patent 7100410 Method of manufacturing seamless tube

US Patent 7101446 Austenitic stainless steel

US Patent 7112549 Low thermal expansion ceramic and member for exposure system

US Patent 7132021 Process for making a work piece from a β-type titanium alloy material

US Patent 7146836 Piercing method for manufacturing of seamless pipe

US Patent 7150391 Material for welding and welded article

US Patent 7160825 Machinable ceramic

US Patent 7165431 Cr-plated mandrel bar for manufacturing hot seamless tube and method of manufacturing the same

US Patent 7170073 Stainless steel product containing B and method for production thereof

US Patent 7174761 Method of manufacturing a seamless pipe

US Patent 7188501 Cold rolling process for metal tubes

US Patent 7197906 Cold rolling process for metal tubes

US Patent 7201812 Method for manufacturing seamless steel tube

US Patent 7225868 Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe

US Patent 7231792 Method and device for manufacturing UOE steel pipes

US Patent 7238434 Welded structure having improved resistance to stress corrosion cracking

US Patent 7244471 Method for surface treatment of metal pipes

US Patent 7247211 Method of manufacture of ultra-low carbon steel

US Patent 7260966 Tube shell for manufacturing a seamless steel pipe and a method for its manufacture

US Patent 7264684 Steel for steel pipes

US Patent 7293443 Method for manufacturing seamless pipes or tubes

US Patent 7308812 Process for producing seamless steel pipe

US Patent 7315009 Material for welding and welded article

US Patent 7316143 Seamless steel tubes and method for producing the same

US Patent 7320237 Method for measuring misalignment of continuance mill and apparatus for measuring the same

US Patent 7325429 Method for manufacturing seamless steel pipe or tube

US Patent 7333925 Manufacturing method and manufacturing apparatus of pipe, thickness deviation information derivation apparatus, and computer program

US Patent 7361236 Martensitic stainless steel

US Patent 7371293 Cold finished seamless steel tubes

US Patent 7377989 Steel tube excellent in exfoliation resistance of scale on inner surface

US Patent 7383710 Seamless tube piercing/rolling apparatus, and seamless tube producing therewith

US Patent 7393420 Steel tube for bearing element parts and method of manufacturing as well as machining the same

US Patent 7393597 Welded joint made of an austenitic steel

US Patent 7396421 Duplex stainless steel and manufacturing method thereof

US Patent 7396597 Ni-Cr-Fe alloy and Ni-Cr-Fe alloy pipe having resistance to carburization and coking

US Patent 7401486 Die, method of manufacturing stepped metal pipe or tube, and stepped metal pipe or tube

US Patent 7416616 Non-heat treated steel for soft-nitriding

US Patent 7416617 High strength seamless steel pipe excellent in hydrogen-induced cracking resistance

US Patent 7458426 Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe

US Patent 7469565 Manufacturing method and cleaning equipment for seamless tube

US Patent 7469721 Thread protector for a pipe

US Patent 7476282 Martensitic stainless steel pipe

US Patent 7485197 Method for manufacturing martensitic stainless steel tube

US Patent 7506526 Seamless tube piercing/rolling plug, and seamless tube producing method using same

US Patent 7520930 Silicon carbide single crystal and a method for its production

US Patent 7530248 Plug for use in piercing mill

US Patent 7531129 Stainless steel for high-pressure hydrogen gas

US Patent 7536888 Process for manufacturing a seamless tube

US Patent 7566372 Railway car wheel

US Patent 7566416 Steel pipe for an airbag inflator and a process for its manufacture

US Patent 7578157 Piercing-rolling method and piercing-rolling apparatus for seamless tubes

US Patent D601688 Plug for the interior of a tube

US Patent 7635406 Method for manufacturing a low alloy steel excellent in corrosion resistance

US Patent 7635413 Method for preparing silicon carbide single crystal

US Patent 7641169 Substrate for a stamper

US Patent 7648587 Steel product for use as line pipe having high HIC resistance and line pipe produced using such steel product

US Patent 7654122 Process for straightening a tube

US Patent 7661284 Application method of Cr-plated mandrel bar for hot rolling

US Patent 7662244 Martensitic stainless steel and method for manufacturing same

US Patent 7666266 Surface conditioning prior to chemical conversion treatment of a steel member

US Patent 7670547 Low alloy steel for oil country tubular goods having high sulfide stress cracking resistance

US Patent 7673485 Hot press forming method

US Patent 7677069 Threaded joint for an oil well pipe and method for manufacturing same

US Patent 7686897 Martensitic stainless steel seamless pipe and a manufacturing method thereof

US Patent 7704338 Method of manufacturing a martensitic stainless steel

US Patent 7704593 Cutting tool and method of producing the same

US Patent 7707865 Flaw detection apparatus and method for tubes

US Patent D615642 Plug for use at an end of a tube

US Patent 7727463 Steel pipe for an airbag system

US Patent 7731808 Hot-rolled steel sheet and cold-rolled steel sheet and manufacturing method thereof

US Patent 7731895 Austenitic Fe-Ni-Cr alloy

US Patent 7739892 Method of manufacturing seamless pipes

US Patent 7749339 Process for manufacturing an airbag inflator bottle member

US Patent 7749431 Stainless steel for high-pressure hydrogen gas

US Patent 7757528 Method of manufacturing seamless pipe or tube

US Patent 7765850 Mechanical pipe-end expander and a method of manufacturing seamless steel pipe

US Patent 7767039 Martensitic stainless steel

US Patent 7770428 Hot bend pipe and a process for its manufacture

US Patent 7776486 Titanium-based material for fuel cell separators and a method for the production thereof

US Patent 7780800 Method of manufacturing a bent pipe

US Patent 7782048 Eddy current testing method, eddy current testing differential coil and eddy current testing probe for internal finned pipe or tube

US Patent 7788957 Apparatus for pipe end sizing and method for pipe end sizing

US Patent 7788959 Method of producing ultra thin wall metallic tube by cold drawing process

US Patent 7799149 Oil country tubular good for expansion in well and manufacturing method thereof

US Patent 7799152 Method for manufacturing nickel alloy

US Patent 7814771 Method for Cr-plating of mandrel bars, the mandrel bar, and process for producing seamless tubes using the method and the mandrel bar

US Patent 7815755 Seamless steel pipe and manufacturing method thereof

US Patent 7816306 Lubricant composition for hot forming

US Patent 7846274 High strength steel pipe for an air bag

US Patent 7858201 Titanium oxide photocatalyst, method for producing same and use thereof

US Patent 7861565 Method for applying lubricant onto mandrel bar, method for controlling thickness of lubricant film on mandrel bar, and method for manufacturing seamless steel pipe

US Patent 7866199 Method for manufacturing seamless steel pipe made of high Cr-high Ni alloy steel

US Patent 7866706 Threaded joint for steel pipe

US Patent 7874212 Ultrasonic probe, ultrasonic flaw detection method, and ultrasonic flaw detection apparatus

US Patent 7877159 Method and apparatus for managing production history information of pipe or tube and method for producing pipe or tube therewith

US Patent 7879164 Method of producing hot-rolled steel sheet

US Patent 7895870 Method for producing ultra thin wall metallic tube with cold working process

US Patent 7896984 Method for manufacturing seamless steel pipe for line pipe

US Patent 7896985 Seamless steel pipe for line pipe and a process for its manufacture

US Patent 7900975 Threaded joint for steel pipes

US Patent 7905967 Method of manufacturing martensitic stainless steel

US Patent 7909086 Method for continuously casting billet with small cross section

US Patent 7910052 Near β-type titanium alloy

US Patent 7913745 Method of continuous casting of small cross section billet

US Patent 7918945 Method for manufacturing surface treated steel material using a chemical conversion treatment liquid

US Patent 7919439 Powdered lubricant composition for hot working and method for manufacturing seamless tubes

US Patent 7922834 Non-oriented electrical steel sheet and production process thereof

US Patent 7927433 Cold-rolled steel sheet

US Patent 7931757 Seamless steel pipe for line pipe and a process for its manufacture

US Patent 7935303 Low alloy steel

US Patent 7937978 Elongation rolling control method

US Patent 7951469 Welding material and welded joint structure

US Patent 7956019 Lubricant for a hot plastic working

US Patent 7959709 Method of producing steel for steel pipe excellent in sour-resistance performance

US Patent 7975619 Two-axle truck for a railway car and a railway car

US Patent 7992417 Method for producing ultra thin wall metallic tube by cold rolling method

US Patent 8006528 Method for producing duplex stainless steel pipe, method for straightening, method for regulating strength, and method for operating straightener