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. 22, 1977
Filed:
Sep. 06, 1973
Applicant:
Inventors:
Charles M Brown, Lewiston, NY (US);
Harry J Brown, Lewiston, NY (US);
Assignee:
Union Carbide Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22H / ; C22C / ; C22C / ;
U.S. Cl.
CPC ...
75204 ; 291828 ; 75211 ;
Abstract
The present invention is a process for making shaped, dense, hard, fine grain tool quality tungsten carbide by the interaction of tungsten, carbon and cobalt during a single heat treatment to form WC + Co compositions. The interaction occurs in situ without the aid of applied pressure. The interaction produces wares of high density with excellent mechanical and cutting properties.