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:
Jul. 17, 2001
Filed:
Aug. 25, 1999
Itsuhei Ogata, Nishio, JP;
Takumi Kataoka, Nishio, JP;
Eturo Yasuda, Nishio, JP;
Kaoru Kuzuoka, Toyota, JP;
Masanori Yamada, Nishio, JP;
Other;
Abstract
The thermistor element of the present invention is composed of a mixed sintered body aM,M,O,.bY,O,of a composition M,M,O,(wherein M,is Y, and M,is at least one element selected from the elements such as Cr, Mn, Ti, etc.) as a perovskite compound and Y,O,, wherein molar fractions a and b satisfy the relations 0.05≦a<1.0, 0<b≦0.95 and a+b=1. Another wide-range type thermistor element of the present invention is composed of a perovskite compound M,(M,M,)O,, wherein M,is at least one element selected from the elements of the groups II and IIIA excluding La in the Periodic Table, and each of M,and M,is at least one element selected from the elements of the groups IIB, IIIB, IVA, VA, VIA, VIIA and VIII. a and b satisfy the relations a+b=1 and 0<b<0.1, where a is a molar fraction of M,and b is a molar fraction of M,in M,(M,M,)O,.