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. 07, 1978
Filed:
Jan. 23, 1976
Applicant:
Inventors:
David B Fraser, Berkeley Heights, NJ (US);
Guenther W Kammlott, Watchung, NJ (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
427 34 ; 427 43 ; 427 53 ; 427 96 ; 427 99 ; 427125 ; 96 88 ; 2041 / ; 427259 ;
Abstract
A method is disclosed for making patterned gold films in the manufacture of integrated circuit devices. The method calls for the deposition of a film of a gold compound whose heat of formation is in the range of from -20 to +10 Kcal/mole, selectively reducing the gold compound to elemental gold by irradiation, and chemically removing the unreduced portions of the gold compound.