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:
Sep. 27, 1977
Filed:
Oct. 28, 1975
Applicant:
Inventors:
Adrien Edgard Cremers, Winksele, BE;
Andre Petrus Maes, Kessel-LO, BE;
Jozef Leonia Pleysier, Rijkevorsel, BE;
Assignee:
Leuven Research & Development VZW, Leuven, BE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02B / ;
U.S. Cl.
CPC ...
210 / ; 423 24 ; 7511 / ;
Abstract
Silver is recovered from silver-containing solutions such as waste waters from the photographic and electroplating industries, by treating such solutions with a cation exchanger in the presence of thiourea or thiourea derivatives. The cation exchanger may be selected from tectosilicates, phyllosilicates and organic cation exchangers.