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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 10446290 B1

PDFFull Text
Date of Patent:
Oct. 15, 2019

Filed:

Sep. 28, 2017

Resistive composition

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 1/20 (2006.01); C03C 8/02 (2006.01); C03C 8/04 (2006.01); C03C 8/10 (2006.01); C03C 8/16 (2006.01); C09D 5/24 (2006.01); H01C 7/00 (2006.01); C03C 3/066 (2006.01); C03C 3/074 (2006.01); C03C 3/087 (2006.01); C03C 3/089 (2006.01); C03C 3/091 (2006.01); C03C 14/00 (2006.01);
U.S. Cl.
CPC ...
H01B 1/20 (2013.01); C03C 3/066 (2013.01); C03C 3/074 (2013.01); C03C 3/087 (2013.01); C03C 3/089 (2013.01); C03C 3/091 (2013.01); C03C 8/02 (2013.01); C03C 8/04 (2013.01); C03C 8/10 (2013.01); C03C 8/16 (2013.01); C03C 14/004 (2013.01); C03C 14/006 (2013.01); C09D 5/24 (2013.01); H01C 7/003 (2013.01); C03C 2214/04 (2013.01); C03C 2214/16 (2013.01); C03C 2214/30 (2013.01);
Abstract

A resistive composition that can form 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 resistive composition of the present invention includes: ruthenium-based conductive particles including ruthenium dioxide; a glass frit that is essentially free of a lead component; and an organic vehicle, wherein the glass frit is a glass frit which is constituted such that in a case where a fired product of a mixture of the glass frit and the ruthenium dioxide has in a range of 1 kΩ/□ to 1 MΩ/□, the fired product exhibits a temperature coefficient of resistance in a plus range.

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