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. 20, 1990
Filed:
Feb. 21, 1989
Applicant:
Inventors:
Jimmy C England, Ashland, KY (US);
Hugh H Ruble, Jr, Huntington, WV (US);
Jon M Poole, Huntington, WV (US);
Assignee:
Inco Alloys International, Inc., Huntington, WV (US);
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148 / ; 148427 ;
Abstract
A heat treatment method for strengthening cold worked tubes made from nickel-base alloys without an attendant loss in corrosion resistance properties. Especially useful for tubes destined for energy resource recovery areas, oil fields, sour gas wells, etc., the tubes may be heated from 316.degree.-769.degree. C. (600.degree.-1100.degree. F.) for up to an hour.