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. 08, 1986
Filed:
Aug. 20, 1984
Applicant:
Inventor:
Andrew J Brock, Cheshire, CT (US);
Assignee:
Olin Corporation, New Haven, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
C23F / ; B44C / ; C03C / ; C03C / ;
U.S. Cl.
CPC ...
156645 ; 134-3 ; 134 41 ; 156656 ; 156657 ; 156666 ; 156667 ; 252 793 ;
Abstract
The present invention relates to a cleaning solution for removing surface oxides from copper base alloys without significantly etching the copper-base alloy material. The cleaning solution comprises from about 1 v/o to about 50 v/o hydrofluoric acid and from about 5 v/o to about 50 v/o of at least one of sulfuric acid and hydrochloric acid. In a preferred embodiment, the cleaning solution consists essentially of from about 5 v/o to about 15 v/o hydrofluoric acid and from about 25 v/o to about 50 v/o sulfuric acid and the balance essentially water.