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:
Aug. 17, 2004
Filed:
Nov. 15, 2002
Applicant:
Inventors:
Tokuhiko Handa, Tokyo, JP;
Yukie Yoshinari, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01C 7/10 ; B32B 9/04 ; B05D 7/00 ;
U.S. Cl.
CPC ...
H01C 7/10 ; B32B 9/04 ; B05D 7/00 ;
Abstract
In an organic PTC thermistor comprising an organic polymer matrix and conductive metal particles dispersed therein, the conductive metal particles are pretreated with an organic material which is different from the organic polymer matrix, does not covalently bond with the conductive metal particles, and is not compatible at a molecular level with the organic polymer matrix so that an organic material layer covers surfaces of conductive metal particles whereby the stability of thermistor performance is improved.