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:
May. 14, 2002
Filed:
Sep. 29, 1999
Applicant:
Inventors:
Masao Nishioka, Tokoname, JP;
Naotaka Kato, Owariasahi, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 1/500 ;
U.S. Cl.
CPC ...
B32B 1/500 ;
Abstract
A structural body has an aluminum nitride sintered body, a silicon carbide film formed on a surface of the sintered body, and an intermediate layer generated between the sintered body and the silicon carbide film. The intermediate layer is mainly made of a silicon nitride. Preferably, the intermediate layer includes smaller than 5 wt % of carbon and smaller than 5 wt % of aluminum, and a thickness of the intermediate layer is greater than 0.2 &mgr;m.