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:
Mar. 28, 2006
Filed:
Jun. 18, 2003
Applicants:
Yoshito Nihira, Akita, JP;
Noriaki Hirano, Akita, JP;
Hisanao Tosaka, Akita, JP;
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C 7/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A PTC thermistorcomprises, at least, a pair of electrodesand a thermistor body, disposed between the electrodes, having a positive resistance vs. temperature characteristic. The thermistor body includes, at least, a thermoplastic resin and an electrically conductive particle made of a metal powder. The thermoplastic resin and electrically conductive particle have respective contents and a state of dispersion adjusted so as to yield a magnetization of 4.0×10to 6.0×10Wb·m·kgwhen a magnetic field of 3.98×10A·mis applied to the thermistor body.