logo

For the Inventor, By the Inventor

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.:

US 4276402 B1

PDFFull Text
Date of Patent:
Jun. 30, 1981

Filed:

Sep. 13, 1979

Polysiloxane/acrylic acid/polcyclic esters of methacrylic acid polymer

Applicant:
Inventors:

Richard C Chromecek, Macedon, NY (US);

William G Deichert, Macedon, NY (US);

Joseph J Falcetta, Pittsford, NY (US);

Martin F VanBuren, Chelmsford, MA (US);

Assignee:

Bausch & Lomb Incorporated, Rochester, NY (US);

Attorneys:

Phipps; Robert M.

Parker; Frank C.

Primary Examiner:

Melvyn I Marquis

Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526264 ; 20415913 ; 20415923 ; 20415924 ; 3511 / ; 3511 / ; 526270 ; 526279 ; 528 23 ; 528 24 ; 528 33 ; 528 26 ; 528 32 ; 556416 ; 556417 ; 556418 ; 556419 ; 556440 ;
Abstract

Monomeric polysiloxanes end-capped with activated unsaturated groups polymerized with acrylic acid and a comonomer comprising a polycyclic ester of acrylic acid or methacrylic acid to form a hydrophilic, water absorbing contact lens is disclosed. These polysiloxane polymer contact lenses are unexpectedly capable upon hydration of retaining from 1 percent to about 99 percent by weight of water, based upon the total weight of the dry, i.e., unhydrated polymer.

Find Patent Forward Citations

Chromecek, Richard. (1981). Polysiloxane/acrylic acid/polcyclic esters of methacrylic acid polymer (U.S. Patent No. 4276402). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4276402

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…