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. 24, 1977
Filed:
Nov. 13, 1975
Applicant:
Inventors:
Toru Morimoto, Ichikawa, JA;
Kenji Matsuzawa, Yokohama, JA;
Assignee:
Nippon Dia Clevite Co., Ltd., Narashino, JA;
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
75135 ;
Abstract
Disclosed is a method for the recovery of useful metallic components such as lead, tin, copper, etc. from a closely layered member having its surface layer of copper or a copper or aluminum alloy closely layered on a back metal of steel or the like. The closely layered member is immersed in molten aluminum to dissolve therein the surface layer to separate it from the back metal, by which lead and/or tin is gathered under a molten aluminum or aluminum-copper layer and separated therefrom.