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:
Feb. 03, 1987
Filed:
May. 17, 1985
Applicant:
Inventors:
Takuji Oyama, Yokohama, JP;
Mamoru Mizuhashi, Yokohama, JP;
Assignee:
Asahi Glass Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428432 ; 428469 ; 428472 ; 428701 ; 428702 ;
Abstract
An optical article having improved heat resistance, which comprises a substrate and at least one laminated coating formed on the substrate, the laminated coating comprising a highly expansive layer having a high thermal expansion coefficient and a less expansive layer having a thermal expansion coefficient lower than that of the highly expansive layer, wherein the improvement is characterized in that a Ti coating layer or a Cr coating layer is interposed at the interface between the highly expansive layer and the less expansive layer.