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:
Nov. 07, 2000
Filed:
Jan. 28, 1999
Tokuhiko Handa, Tokyo, JP;
Yukie Yoshinari, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
An organic positive temperature coefficient thermistor comprising a thermoplastic polymer matrix, a low-molecular organic compound having a melting point that is equal to or greater than 40.degree. C. and less than 100.degree. C. and conductive particles, each having spiky protuberances, is obtained by crosslinking a milled mixture of these components with a silane coupling agent comprising a vinyl group or a (meth)acryloyl group and an alkoxy group. This organic positive temperature coefficient thermistor has sufficiently low resistance at room temperature and a large rate of resistance change between an operating state and a non-operating state, and can be operated at less than 100.degree. C. with a reduced temperature vs. resistance curve hysteresis, ease of control of operating temperature, and high performance stability.