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:
Jul. 03, 1984
Filed:
Apr. 15, 1983
Applicant:
Inventors:
Mineo Kawamoto, Hitachi, JP;
Kanji Murakami, Mito, JP;
Yutaka Itoh, Takahagi, JP;
Youichi Matsuda, Hitachi, JP;
Motoyo Wajima, Hitachi, JP;
Hirosada Morishita, Hitachi, JP;
Shoji Kawakubo, Ibaraki, JP;
Toyofusa Yoshimura, Ibaraki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; H05K / ;
U.S. Cl.
CPC ...
427 98 ; 427259 ; 427306 ;
Abstract
When an alkaline earth metal carbonate powder is mixed with an adhesive and is formed into an adhesive layer in a conventional covering method, a problem of the transfer of catalyst for electroless plating during a masking step or later electroless plating step is solved. Further, blisters under plated film caused by a fire retardant contained in an insulating substrate is also overcome by the use of alkaline earth metal powder.