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. 18, 2000
Filed:
Jan. 28, 1999
Applicant:
Inventors:
Tokuhiko Handa, Tokyo, JP;
Yukie Yoshinari, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ; H01C / ;
U.S. Cl.
CPC ...
252511 ; 252513 ; 252514 ; 338 / ; 338 25 ;
Abstract
The organic positive temperature coefficient thermistor of the invention comprises a polyalkylene oxide, a water-insoluble organic compound and conductive particles having spiky protuberances, and so can operate at less than 100.degree. C. that is harmless to the human body, with low initial resistance in a non-operating state (at room temperature), and a large rate of resistance change upon transition from the non-operating state to an operating state, and improved humidity resistance.