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:
Nov. 13, 1990
Filed:
May. 19, 1989
Applicant:
Inventors:
James R Crum, Ona, WV (US);
William G Lipscomb, Barboursville, WV (US);
Pasupathy Ganesan, Huntington, WV (US);
Assignee:
Inco Alloys International, Inc., Huntington, WV (US);
Primary Examiner:
Int. Cl.
CPC ...
C22D / ;
U.S. Cl.
CPC ...
148410 ; 148 13 ; 148162 ; 148428 ;
Abstract
A heat treatment of alloy 617 generally including 732.degree. C.-927.degree. C. (1350.degree. F.-1700.degree. F.) for about one hour. The resultant discontinuous carbide network in the grain boundaries inhibits stress corrosion crack growth in polythionic acid environments.