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:
Feb. 09, 1988
Filed:
Nov. 05, 1985
Applicant:
Inventors:
Nathan L Church, Chagrin Falls, OH (US);
W Raymond Cribb, Mentor, OH (US);
John C Harkness, Lakewood, OH (US);
Assignee:
Brush Wellman, Inc., Cleveland, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148 / ; 148411 ;
Abstract
This invention is directed to the treatment of copper beryllium alloys, and to articles and parts made therefrom, containing special small amounts of beryllium and cobalt, e.g., about 0.2% to about 0.5% beryllium and about 0.2% to about 1% or about 1.5% or about 2% cobalt, which imparts to these alloys a superior combination of stress relaxation resistance, formability, ductility, conductivity and strength by the process of solution annealing, cold working at least about 50% or at least about 70% or 90% or more and age hardening.