The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2002
Filed:
Apr. 28, 1993
Applicant:
Inventors:
Roderick William Jonathon Bowers, Uxbridge, GB;
Peter William Stratford, Uxbridge, GB;
Stephen Alister Jones, Uxbridge, GB;
Assignee:
Biocompatibles Limited, Uxbridge, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 4/300 ; C08F 1/200 ;
U.S. Cl.
CPC ...
C08L 4/300 ; C08F 1/200 ;
Abstract
Cross-linked copolymers which are obtainable by polymerizing a neutral diluent monomer or monomers, a monomer or monomers bearing a center of permanent positive charge, and a bifunctional and/or trifunctional cross-linking agent, are suitable for use in contact lenses. Process for producing them by copolymerization, contact lens material comprising them, contact lenses made of them and processes for producing contact lenses from them.