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:
Apr. 20, 1976
Filed:
Sep. 13, 1974
Applicant:
Inventor:
Jagtar S Basi, Fishkill, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44D / ; H01L / ;
U.S. Cl.
CPC ...
156 17 ; 134-2 ; 134 42 ; 427 82 ; 427309 ; 427444 ; 252 791 ; 252 795 ;
Abstract
Copper contaminants are removed from silicon with a solution containing copper (II) complexes. The solution may be recycled after use by bubbling oxygen through it.