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:
Jun. 26, 2001
Filed:
Aug. 20, 1999
Applicant:
Inventor:
Gerald D. Treadway, Penngrove, CA (US);
Assignee:
The Walman Optical Company, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/02 ;
U.S. Cl.
CPC ...
G02C 7/02 ;
Abstract
A hard, transparent coating for eyeglass lenses and the like, derived from a blend of a hydrolysis product of an epoxy-functional alkoxysilane and an imine derivative of a hydrolysis product of an amine-functional alkoxysilane. Bodying of the coating composition to avoid mudcracking of the coating is rendered unnecessary and pot life is improved by incorporating in the coating composition a metal oxide colloid.