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:
Apr. 23, 1985
Filed:
Jun. 14, 1984
Applicant:
Inventors:
Joseph A Abys, Bridgewater, NJ (US);
Yutaka Okinaka, Madison, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
423387 ;
Abstract
The invention is a process for electroplating palladium in which at least part of the palladium in the electroplating bath is added as a palladium ammine hydroxide. Both the solid form and solution form of palladium ammine hydroxide are useful in supplying palladium to the palladium electroplating bath. Both solution and crystals are chemically stable and can be stored for long periods of time. Further, use of the palladium ammine hydroxide compounds permit replenishment without accumulation of undesirable ions in the bath and also neutralizes hydrogen ions formed in the plating process.