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:
Aug. 24, 2004
Filed:
Dec. 11, 2002
Tatsuo Kunishi, Takefu, JP;
Toshi Numata, Fukui, JP;
Junichi Saitoh, Fukui, JP;
Yukio Sakabe, Kyoto, JP;
Murata Manufactruing Co., Ltd., Kyoto-fu, JP;
Abstract
A work piece is mixed with Ni pieces having an average diameter of 1 mm and exhibiting catalytic activity to oxidation reaction of sodium phosphinate (NaH PO ) added as a reducing agent in a plating bath containing the reducing agent and a Ni salt to form a Ni—P film on an electrode made of Cu, Ag or Ag—Pd by auto-catalytic electroless plating. Then, the work piece is dipped in a plating bath containing an Au salt to form an Au film on the surface of the Ni—P film by substitutional electroless plating. This method is capable of forming a desired plating film only on a desired portion at a low cost.