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:
Nov. 06, 2001
Filed:
Jan. 19, 2001
Applicant:
Inventors:
Albert R. LeBoeuf, Burleson, TX (US);
Douglas C. Schlueter, Fort Worth, TX (US);
Joseph I. Weinschenk, III, Fort Worth, TX (US);
Assignee:
Alcon Manufacturing, Ltd., Fort Worth, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/48 ; C08F 4/32 ; C08F 4/34 ; C08J 5/00 ;
U.S. Cl.
CPC ...
C08F 2/48 ; C08F 4/32 ; C08F 4/34 ; C08J 5/00 ;
Abstract
Acrylic, high refractive index ophthalmic device materials comprising an aryl acrylic monomer, a first stage polymerization initiator and a second stage cross-linking agent are prepared in a two-stage method. The monomers used to form the ophthalmic device materials do not contain cross-linking agents having more than one unsaturated bond. In the first stage of the method, the materials are polymerized. In the second stage, the materials are cross-linked by exposure to heat.