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:
Sep. 09, 1986
Filed:
Nov. 09, 1981
Applicant:
Inventors:
James C Powell, Minnetonka, MN (US);
G Graham Allan, Seattle, WA (US);
Assignee:
Precision-Cosmet Co., Inc., Minnetonka, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; G02C / ;
U.S. Cl.
CPC ...
526271 ; 264-17 ; 264-24 ; 264-27 ; 3511 / ; 3511 / ; 5253291 ; 526263 ; 526272 ; 526279 ; 526320 ; 5263471 ;
Abstract
Wettable, oxygen and carbon dioxide permeable, optically clear contact lenses are made of a composition comprising styrene or a substituted styrene compound, an ethylenically polyunsaturated crosslinking compound and an ethylenically unsaturated silicone containing compound and an .alpha.,.beta.-unsaturated dicarboxylic acid anhydride compound.