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:
Jun. 01, 1993
Filed:
Sep. 13, 1989
Applicant:
Inventors:
Dino F DiFranco, Mayfield Village, OH (US);
Sidney J Clouser, Chardon, OH (US);
Assignee:
Gould Inc., Eastlake, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
205 77 ; 428544 ;
Abstract
Copper conductive foil for use in preparing printed circuit boards is electrodeposited from an electrolyte solution containing copper ions, sulphate ions, animal glue and thiourea. The thiourea operates to decrease the roughness of the foil, to enable operation at higher current densities and/or to modify the ductility characteristics of the foil.