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:
Mar. 09, 1993
Filed:
Oct. 04, 1991
Wataru Ito, Kawasaki, JP;
Shumpei Miyajima, Kawasaki, JP;
Misao Hashimoto, Kawasaki, JP;
Isao Itoh, Hikari, JP;
Tadashi Komori, Hikari, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A metal plate is given an excellent decorative color by a multi-ceramic coating of a colored ceramic layer formed over the metal plate, the colored ceramic layer being made of at least one selected from the group consisting of nitrides and carbides of titanium, zirconium, hafnium, chromium, niobium, and aluminum and having a thickness of 0.1 .mu.m to 1 .mu.m; and a transparent ceramic layer formed over the colored ceramic layer, the transparent ceramic layer being made of at least one of the group consisting of silicon oxide, silicon nitride, and aluminum oxide and having a thickness of 0.1 .mu.m to 5 .mu.m. The depositions of the colored and transparent ceramic layers are effected by a dry process, and the order of deposition of the colored and transparent ceramic layers can be reversed.