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:
Jan. 01, 2002
Filed:
Sep. 24, 1998
Applicant:
Inventors:
Hiroji Tani, Nagaokakyo, JP;
Kazuhito Ohshita, Omihachiman, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 1/20 ; H05K 1/09 ;
U.S. Cl.
CPC ...
H01B 1/20 ; H05K 1/09 ;
Abstract
As an electrically conductive paste for via-holes, an organic vehicle and an electrically conductive metal powder coated with a resin which is insoluble in the organic vehicle are prepared. Filling via-holes with the electrically conductive paste for via-holes produces a monolithic ceramic. Filling characteristics of the electrically conductive paste into via-holes are improved, and cracks and elevations of the conductive metal and cracks of the ceramic barely form during the baking step. Further, the resulting monolithic ceramic substrate can maintain excellent soldering wettability and plating characteristics.