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:
Jan. 20, 2004
Filed:
Dec. 18, 2000
Applicant:
Inventor:
Kunio Sasaki, Tokyo, JP;
Assignee:
Hoya Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 2/700 ; B32B 5/16 ; B32B 9/04 ; B32B 3/00 ; C08K 5/32 ;
U.S. Cl.
CPC ...
B32B 2/700 ; B32B 5/16 ; B32B 9/04 ; B32B 3/00 ; C08K 5/32 ;
Abstract
The present invention is concerned with a coating composition for a hard coat layer of a plastic lens, which comprises (A) a hydrolyzate of a specific alkoxysilane compound, (B) fine particles of an oxide of silicon, aluminum, tin, antimony, zirconium, tungsten or titanium or composite fine particles made of oxides of any two oxides of these, (C) a polyurethane and (D) a curing agent, and the coating composition is applied onto a plastic lens surface to give a scratch-resistant plastic lens.