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. 07, 1981
Filed:
Mar. 17, 1980
Applicant:
Inventor:
Arnold F Schmeckenbecher, Poughkeepsie, NY (US);
Assignee:
International Business Machines Corp., Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
156664 ; 156656 ; 252 791 ;
Abstract
A solution for dissolving noble metal alloys which include tin, and other metals commonly used in semiconductor package substrates, having significant concentrations of KI, iodine and halogen ions selected from the group consisting of chloride and bromide ions.