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. 27, 2009
Filed:
Aug. 30, 2005
Applicants:
Hirobumi Tanaka, Chuo-ku, JP;
Katsuhiko Igarashi, Chuo-ku, JP;
Inventors:
Hirobumi Tanaka, Chuo-ku, JP;
Katsuhiko Igarashi, Chuo-ku, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A thick-film resistor paste comprised of a resistor composition dispersed in an organic vehicle, the resistor composition containing at least one of RuOand a Ru composite oxide as a conductive material, a glass composition, a titanate compound of an alkali earth metal of any of BaTiO, CaTiO, and SrTiO, a metal material, and further optionally CuO and CuO as an additive, the formulation of the resistor composition optimized in accordance with the required resistance value, enabling realization of a thick-film resistor free of Pb and superior in TCR and STOL.