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:
Jun. 22, 1982
Filed:
Aug. 04, 1980
Applicant:
Inventors:
George T Chiu, Wappingers Falls, NY (US);
Robert R Joseph, Poughkeepsie, NY (US);
Gunars M Ozols, Wappingers Falls, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
29591 ; 29590 ; 156643 ; 156652 ; 156656 ; 1566591 ; 156665 ; 156666 ; 2041 / ; 357 67 ;
Abstract
Aluminum/copper alloy conductors are made by forming a patterned layer of copper on a layer of aluminum. The portion of the aluminum layer which is not protected by the copper layer is removed by reactive ion etching and the resulting structure is then heated to cause the copper to diffuse into, and alloy with the aluminum layer.