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:
Jan. 11, 1977
Filed:
Nov. 18, 1975
Applicant:
Inventors:
Isao Isa, Misato, JA;
Tutomu Takahashi, Shibukawa, JA;
Assignee:
The Japan Carlit Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; C01G / ;
U.S. Cl.
CPC ...
7510 / ; 75121 ; 423 22 ;
Abstract
From a ruthenium-containing substance, sparingly soluble in any of water, acid solutions and basic solutions, flaked off used metal electrodes comprising a substrate of a corrosion-resistant metal coated with ruthenium metal or a compound thereof, ruthenium is recovered in the form of metal or a compound thereof, soluble in such media as described hereabove, easily and with a high percent recovery by means of a combination of simple chemical procedures and also inexpensive chemicals and in a short period of time. The recovered ruthenium metal or compound thereof can be reused for recoating used metal electrodes and the like.