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:
Oct. 11, 1994
Filed:
Jan. 04, 1993
Applicant:
Inventors:
Yasuhito Fushii, Omuta, JP;
Miyuki Nakamura, Omuta, JP;
Yukihiko Nakajima, Omuta, JP;
Kazuo Kato, Machida, JP;
Akira Miyai, Machida, JP;
Kazuyuki Hiruta, Machida, JP;
Assignee:
Denki Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
156630 ; 156634 ; 156656 ; 156664 ;
Abstract
Method for forming a ceramic circuit board by forming a metal circuit pattern on a ceramic board through an active metal ingredient-containing brazing material and removing an unnecessary part of the brazing material by chemical liquor treatment.