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:
Sep. 17, 2002
Filed:
Jan. 28, 1999
Applicant:
Inventor:
Tokuhiko Handa, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01C 7/10 ; H01C 7/13 ;
U.S. Cl.
CPC ...
H01C 7/10 ; H01C 7/13 ;
Abstract
The organic positive temperature coefficient thermistor of the invention comprises a thermosetting polymer matrix, a low-molecular organic compound and conductive particles, each having spiky protuberances, and so can have sufficiently low room-temperature resistance and a large rate of resistance change between an operating state and a non-operating state. In addition, the thermistor can have a small temperature vs. resistance curve hysteresis with no NTC behavior after resistance increases, ease of control of operating temperature, and high performance stability.