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:
Aug. 31, 1982
Filed:
May. 29, 1981
Applicant:
Inventor:
William J Willis, North Royalton, OH (US);
Assignee:
Rohco, Inc., Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204 / ; 204D / ; 2521821 ;
Abstract
Aqueous acidic copper plating baths and processes for electrodepositing bright and level copper coatings are described. In addition to containing one or more bath-soluble copper salts, free acid and chloride ions, the copper plating baths of the invention contain a brightening compound and a heterocyclic nitrogen or sulfur-nitrogen compound. The brightener compounds are prepared by reacting a mixture of