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:
Oct. 19, 1982
Filed:
Jun. 17, 1981
Applicant:
Inventors:
Albrecht Bischoff, Bruchkobel, DE;
Fritz Aldinger, Rodenbach, DE;
Assignee:
W. C. Heraeus GmbH, Hanau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10L / ;
U.S. Cl.
CPC ...
428607 ; 428620 ; 428652 ; 428923 ; 357 67 ; 29589 ; 29590 ; 29591 ;
Abstract
To prevent metal fatique, particularly when making a button loop, or nail head thermo compression bond connection to a semiconductor, the connecting wire has a core of copper, or a copper alloy of at least 60% copper content, and a jacket of aluminum, or aluminum alloy, of at least 95% aluminum content; in a preferred form, the core is 94% copper and 6% tin, and the jacket is, for example, 99% aluminum, 1% silicon; 96% aluminum, 4% copper; or 99% aluminum, 1% magnesium, all percentages by weight.