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:
Jul. 31, 1990
Filed:
Jun. 05, 1989
Applicant:
Inventors:
John L Cordani, Waterbury, CT (US);
Raymond A Letize, West Haven, CT (US);
Assignee:
MacDermid, Incorporated, Waterbury, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25C / ; C25C / ; C23F / ; C23F / ;
U.S. Cl.
CPC ...
204106 ; 204115 ; 204120 ; 204130 ; 252 792 ; 252 794 ; 156642 ; 156656 ; 156666 ; 134-3 ; 134 10 ; 134 41 ;
Abstract
An aqueous solution of alkane sulfonic acid and inorganic nitrate used to strip metals from substrate surfaces, such as in stripping tin or tin-lead from copper surfaces, is regenerated by subjecting it to electrolysis to case dissolved stripped metals therein to deposit in metallic form on the surfaces of a cathode.