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:
May. 29, 1979
Filed:
Sep. 15, 1978
Applicant:
Inventors:
Richard S Fisch, St. Paul, MN (US);
Norman Newman, St. Paul, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75109 ; 7511 / ; 7511 / ; 266170 ;
Abstract
A method for controlled delivery of corrosion inhibitors to a silver containing solution in a silver recovery device which utilizes a metallic fill for electron exchange. The method involves forming a structure of polyurethane foam within which a corrosion inhibitor is incorporated and placing the structure in the silver recovery device.