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. 16, 2001
Filed:
Jan. 19, 1999
Kengo Oka, Nukata-gun, JP;
Takashi Nagasaka, Anjo, JP;
Yuji Ootani, Okazaki, JP;
Kazumasa Naito, Odawara, JP;
Masayuki Miyairi, Isehara, JP;
Denso Corporation, Kariya, JP;
Abstract
A circuit board comprises wiring parts containing silver on a substrate, and a conductivity suppressing agent such as a potassium compound provided between the wiring parts, for preventing the silver attached on the substrate between the wiring parts from being conductive. Therefore, the insulation deterioration between the wiring parts can be suitably suppressed, which usually occurs when a voltage is applied between the wiring parts containing silver on the substrate under a high temperature atmosphere, irrespective of the presence or absence of water or water vapor. That is, the high temperature leakage phenomenon can be suitably suppressed.