US Patent RE42243 Synthetic viscoelastic material for ophthalmic applications
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Patent abstract
A viscoelastic composition for injection into a human eye comprised of about 2.0 to 2.5 percent of hydroxypropyl methylcellulose dissolved in a physiological salt solution, the composition, the composition having a viscosity from about 15,000 to about 40,000 centipoise and the hydroxypropyl methylcellulose having a molecular weight from about 220,000 to less than about 420,000 Daltons, the composition being free of debris or gels greater than 0.5 μm. Also described is a process for preparing the clean, high molecular weight hydroxy propylmethyl cellulose composition.
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Patent Inventor Names
Bradford C. Webb0
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Official Website
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US Patent RE042243 Synthetic viscoelastic material for ophthalmic applications US Patent RE42243 Synthetic viscoelastic material for ophthalmic applications
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Patent Number
RE042243
Patent Number
RE42243
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US Patent RE042243 Synthetic viscoelastic material for ophthalmic applications
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Patent jurisdiction
Patent number
RE042243
Date of patent
March 22, 2011
Patent application number
08870199
Date Filed
June 5, 1997
Patent primary examiner
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