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:
Mar. 03, 1981
Filed:
Sep. 13, 1979
Applicant:
Inventors:
Gary D Friends, Ontario, NY (US);
Martin F VanBuren, Chelmsford, MA (US);
Assignee:
Bausch & Lomb Incorporated, Rochester, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; G02C / ;
U.S. Cl.
CPC ...
526279 ; 20415913 ; 3511 / ; 525479 ; 526282 ; 528 26 ;
Abstract
Monomeric polysiloxanes end-capped with activated unsaturated groups polymerized with a comonomer comprising a polycyclic ester of acrylic acid or methacrylic acid to form a soft contact lens is disclosed. These instant polysiloxane copolymer contact lenses have unexpectedly high tear strengths and unexpectedly high modulus of elasticity.
Friends, Gary. (1981). Contact lens made from polymers of polysiloxane and polycyclic esters of (U.S. Patent No. 4254248). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4254248
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile