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:
Mar. 30, 1999
Filed:
Jun. 23, 1997
Applicant:
Inventors:
Jin-Chie Lin, Taoyuan, TW;
Chih-Chia Chen, Taoyuan, TW;
Tai-Hong Chen, Taoyuan, TW;
Fong-Ru Yang, Hsinchu, TW;
Jyh-Herng Chen, Hsinchu, TW;
Assignee:
Industrial Technology Research Institute, Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
205240 ; 205 81 ; 205255 ; 205245 ;
Abstract
A method for preparing a nickel-zinc-copper or nickel-zinc alloy electroplating solution from at least one electroplating waste solution and/or at least one acidic leach solution of metal scrap containing nickel and/or zinc ions is disclosed. The method involves mixing two or more than two of solutions of the electroplating waste solutions and the acidic leach solutions, and optionally water, so that the ion concentrations of Ni, Zn, Cu, Fe, Cr and Pb of the resulting mixed solution are within the following ion concentrations: