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:
Jan. 11, 2005
Filed:
May. 23, 2003
Applicants:
Yukie Yoshinari, Tokyo, JP;
Tokuhiko Handa, Tokyo, JP;
Inventors:
Yukie Yoshinari, Tokyo, JP;
Tokuhiko Handa, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01C 710 ;
U.S. Cl.
CPC ...
Abstract
In an organic PTC thermistor comprising a thermistor body comprising a high-molecular weight organic compound-containing matrix and metal particles, conductive non-metallic fines, typically carbon black, are attached to surfaces of the metal particles. The device has a low room-temperature resistance and a high change rate of resistance, and prevents degradation of its performance during storage under hot humid conditions.