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:
Feb. 18, 1986
Filed:
Nov. 02, 1984
Applicant:
Inventors:
Karl-Heinz Konig, Frankfurt, DE;
Michael Schuster, Frankfurt-Harheim, DE;
Dieter Hollmann, Darmstadt, DE;
Rainer Schlodder, Rodenbach, DE;
Assignee:
Degussa Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75108 ; 423 22 ; 423 42 ; 423101 ; 423140 ; 7511 / ; 75119 ; 75117 ; 75120 ; 75121 ; 210725 ; 210729 ; 564 23 ;
Abstract
There is described a process for the separation and purification of the platinum group metals from base metal out of acidic aqueous solutions. For this purpose there is used a substituted thiourea of the formula