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:
Oct. 23, 2001
Filed:
Feb. 25, 1999
Itsuhei Ogata, Nishio, JP;
Masanori Yamada, Nishio, JP;
Eturo Yasuda, Nishio, JP;
Kaoru Kuzuoka, Toyota, JP;
Other;
Abstract
The thermistor portion of a thermistor device consists of a mixed sintered body of aY(Cr,Mn,)O,.bAl,O,made of the perovskite-type compound Y(Cr,Mn,)O,and Al,O,, or a mixed sintered body of aY(Cr,Mn,)O,.b(Al,O,+Y,O,) made of Y(Cr,Mn,)O,, Al,O,and Y,O,. The mole fractions a and b have the relationships 0.05≦a>1.0, 0<b≦0.95 and a+b=1. This is required to obtain a thermistor device that has stable characteristics and exhibits a small change in its resistance value, even in a heat history from room temperature to 1000° C. or the like, and also has a resistance value of 50&OHgr; to 100 k&OHgr; in the temperature range from room temperature to 1000° C.