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. 14, 1982
Filed:
Apr. 01, 1981
Applicant:
Inventors:
Louis L Pytlewski, Philadelphia, PA (US);
Kenneth Krevitz, Philadelphia, PA (US);
Assignee:
The Franklin Institute, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; C22B / ; C22B / ;
U.S. Cl.
CPC ...
75 / ; 75 / ; 75 / ; 75117 ; 7511 / ; 7511 / ; 75119 ; 75120 ; 75121 ;
Abstract
Valuable metals are recovered from metal-containing materials, such as scrap or waste materials, in which the metal is present in chemically combined form, by a process which comprises contacting the metal-containing material with a reagent comprising the product of the reaction of an alkali metal or alkali metal hydroxide with a polyglycol or a polyglycol monoalkyl ether and oxygen.