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. 18, 2004
Filed:
Mar. 27, 2003
Applicant:
Inventors:
Ken Iyoda, Shiojiri, JP;
Susumu Shimada, Shiojiri, JP;
Assignee:
Dowa Mining Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 1/832 ; C23C 1/818 ; B05D 3/00 ; B05D 5/00 ; B32B 1/500 ;
U.S. Cl.
CPC ...
C23C 1/832 ; C23C 1/818 ; B05D 3/00 ; B05D 5/00 ; B32B 1/500 ;
Abstract
The surface to be plated of a composite made of a metallic and a non-metallic material is degreased and otherwise cleaned and immersed in a palladium activator fluid conditioned with a hydrogencarbonate to a pH of 2˜5. After this pretreating process, the composite is plated with a metal and becomes most suitable for use as a material for heat sink on hybrid ICs since it can be efficiently soldered and has better corrosion resistance.