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. 16, 1989
Filed:
Mar. 07, 1988
Applicant:
Inventors:
Toshiaki Cho, Hindale, IL (US);
Krishnan Narasimhan, Southfield, MI (US);
Deepak G Bhat, Troy, MI (US);
Assignee:
GTE Valenite Corporation, Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
427249 ; 427255 ; 4272552 ; 427343 ;
Abstract
In a process for preparing a coated cemented carbide cutting insert, a layer of titanium carbide containing eta phase is first vapor deposited directly adjacent a cobalt cemented tungsten carbide substrate and the eta phase is then removed by contacting the titanium carbide surface with a carburizing gas under suitable conditions to convert the eta phase to elemental cobalt and tungsten carbide.