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:
Jun. 27, 1989
Filed:
Feb. 09, 1987
Applicant:
Inventors:
Isao Oda, Nagoya, JP;
Tomonori Takahashi, Chita, JP;
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501 92 ; 501 97 ; 427249 ; 428698 ; 428446 ;
Abstract
A silicon nitride sintered body having an improved oxidation resistance or wear resistance has in its surface a coating of silicon carbide. Particularly, the coating of silicon carbide is formed by CVD process.