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:
Dec. 19, 1989
Filed:
Aug. 31, 1987
Applicant:
Inventors:
Toshio Shimizu, Tokyo, JP;
Kouji Hirose, Tokyo, JP;
Assignee:
Seikosha Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; B32B / ;
U.S. Cl.
CPC ...
350166 ; 428333 ; 428704 ;
Abstract
A colored article comprises a workpiece having a surface producing a color by light interference. The surface is defined by forming a reflective surface and coating the reflective surface with a composite layer of SiC and SiO.sub.2 having an SiO.sub.2 ingredient ratio of 5 to 80% by weight and a thickness of 200 to 3000 .ANG. or with a composite layer of Si.sub.3 N.sub.4 and SiO.sub.2 having an SiO.sub.2 ingredient ratio of 5 to 80% by weight and a thickness of 400 to 4000 .ANG..