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. 17, 1993
Filed:
Aug. 02, 1990
Hideo Arima, Yokohama, JP;
Takashi Kuroki, Yokohama, JP;
Masao Sekihata, Kunitachi, JP;
Mituru Fujii, Hadano, JP;
Mutsumi Horikoshi, Machida, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
This invention provides a conductor paste having a low resistivity (about 10 .mu..OMEGA..cm or below) and capable of retaining a film thickness of 25 to 35 .mu.m after baking by composing the paste from 85 to 96 wt. % of a metal powder having a resistivity of 10 .mu..OMEGA..cm or below and 4 to 15 wt. % of an organic vehicle containing 5 to 13 wt. % of a binder. The invention also provides a process for producing the above-described conductor paste, in which 85 to 96 wt. % of a metal powder having a resistivity of 10 .mu..OMEGA..cm or below and 4 to 15 wt. % of an organic vehicle containing 5 to 13 wt. % of a binder are forcibly passed between the barrel-shaped rolls in a kneader and thereby kneaded to form a paste, wherein the roll interval in the kneader is adjusted so that the smallest distance between the adjoining barrel-shaped rolls becomes 5 .mu.m or less and the shear rate therebetween is set at 1,000 s.sup.-1 or more.