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. 09, 1999
Filed:
Jul. 22, 1997
William L Brenneman, Cheshire, CT (US);
John F Breedis, Trumbull, CT (US);
Olin Corporation, New Haven, CT (US);
Abstract
A copper alloy achieves high electrical conductivity, in excess of 70% IACS; high strength, ultimate tensile strength in excess of 75 ksi; good surface cosmetics; and good stampability, above 25% break, by controlled additions of magnesium, iron and phosphorous. There is a critical iron content to achieve both good stampability and high electrical conductivity and a critical phosphorous content to achieve high strength and relatively small metal phosphide particles. There is further, a critical relationship between the amount of iron and phosphorous. An additions of magnesium, in amounts of more than 0.03%, broadens the effective ratio of iron to phosphorous, widening the composition box of the alloys of the invention.