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. 12, 1996
Filed:
Feb. 21, 1995
Syed H Askari, Santa Clara, CA (US);
Hermann H Neidlinger, San Jose, CA (US);
Khushroo Gandhi, Sunnyvale, CA (US);
Pilkington Barnes Hind, Inc., Sunnyvale, CA (US);
Abstract
Disclosed is a polymeric article at least a portion of which is manufactured from a hydrogel material having a hydration level of from between about 45% and 56% by weight, which hydrogel is formed from a xerogel which is a copolymer system that can be solvolyzed and hydrated and during which undergoes a linear expansion of from about -7% to about +7%. The polymeric article is comprised of a copolymer system comprising dichloroacetate ester of glyceryl acrylate, methacrylate and ethacrylate and one or more compatible ethylenically unsaturated monomers without such solvolyzable groups.