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:
Jul. 23, 1991
Filed:
Sep. 19, 1989
Applicant:
Inventors:
Deepak Bhat, Troy, MI (US);
Dhirajlal Shah, Sterling Heights, MI (US);
Assignee:
GTE Valenite Corporation, Troy, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
51307 ; 51308 ; 51309 ;
Abstract
A coated densified ceramic cutting tool has a granular phase of silicon nitride, silicon aluminum oxynitride, and a reaction formed submicron refractory metal nitride uniformly distributed in a matrix of a suitable densification aid with a coating comprising an interfacial layer of titanium nitride followed by at least one layer of refractory metal material.