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. 16, 1988
Filed:
Jan. 12, 1987
Applicant:
Inventors:
Michael J Pryor, Woodbridge, CT (US);
Andrew J Brock, Cheshire, CT (US);
Assignee:
Olin Corporation, New Haven, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C23F / ;
U.S. Cl.
CPC ...
252 792 ; 252 793 ; 156666 ;
Abstract
A solution for etching copper or a copper base material, the solution consisting essentially of peroxydisulfuric acid, being present in an amount of from about 0.5N up to about 6.0N, with chloride or fluoride present in an amount of from about 10 ppm up to about 500 ppm, and the balance water is described.