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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.:

US 10403421 B1

PDFFull Text
Date of Patent:
Sep. 03, 2019

Filed:

Dec. 14, 2017

Thick film resistor and production method for same

Applicant:

Shoei Chemical Inc., Shinjuku-ku, Tokyo, JP;

Inventors:

Hiroshi Mashima, Tosu, JP;

Yukari Morofuji, Tosu, JP;

Assignee:

SHOEI CHEMICAL INC., Shinjuku-ku, Tokyo, JP;

Attorney:

Flynn Thiel, P.C.

Primary Examiner:

Mark Kopec

Assistant Examiner:

Jaison P Thomas

Int. Cl.
CPC ...
H01B 1/08 (2006.01); H01C 7/00 (2006.01); H01B 1/20 (2006.01); H01B 1/14 (2006.01); C03C 3/089 (2006.01); C03C 4/14 (2006.01); C03C 8/02 (2006.01); C03C 8/18 (2006.01); C09D 11/03 (2014.01); C09D 11/52 (2014.01); H01C 17/065 (2006.01); C03C 3/068 (2006.01); C03C 3/072 (2006.01); C03C 3/074 (2006.01); C03C 3/085 (2006.01); C03C 3/087 (2006.01); C03C 3/091 (2006.01); C03C 3/093 (2006.01); C03C 3/105 (2006.01); C03C 3/108 (2006.01); C03C 8/04 (2006.01); C03C 8/10 (2006.01); C03C 8/22 (2006.01); C09D 11/037 (2014.01); H01C 7/06 (2006.01); H01C 7/02 (2006.01);
U.S. Cl.
CPC ...
H01C 7/003 (2013.01); C03C 3/068 (2013.01); C03C 3/072 (2013.01); C03C 3/074 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 3/089 (2013.01); C03C 3/091 (2013.01); C03C 3/093 (2013.01); C03C 3/105 (2013.01); C03C 3/108 (2013.01); C03C 4/14 (2013.01); C03C 8/02 (2013.01); C03C 8/04 (2013.01); C03C 8/10 (2013.01); C03C 8/18 (2013.01); C03C 8/22 (2013.01); C09D 11/03 (2013.01); C09D 11/037 (2013.01); C09D 11/52 (2013.01); H01B 1/08 (2013.01); H01B 1/14 (2013.01); H01B 1/20 (2013.01); H01C 7/00 (2013.01); H01C 7/06 (2013.01); H01C 17/06533 (2013.01); C03C 2204/00 (2013.01); C03C 2205/00 (2013.01); H01C 7/023 (2013.01);
Abstract

A thick film resistor excluding a toxic lead component from a conductive component and glass and having characteristics equivalent to or superior to conventional resistors in terms of, in a wide resistance range, resistance values, TCR characteristics, current noise characteristics, withstand voltage characteristics and the like. The thick film resistor is formed of a fired product of a resistive composition, wherein the thick film resistor contains ruthenium-based conductive particles containing ruthenium dioxide and a glass component essentially free of a lead component and has a resistance value in the range of 100 Ω/□ to 10 MΩ/□ and a temperature coefficient of resistance within ±100 ppm/° C.

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