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:
May. 16, 2017
Filed:
Jul. 22, 2015
Applicant:
Polytronics Technology Corp., Hsinchu, TW;
Inventors:
Chien Cheng Ho, Taipei, TW;
Tong Cheng Tsai, Tainan, TW;
Kuo Chang Lo, New Taipei, TW;
Yi An Sha, Taipei, TW;
Assignee:
Polytronics Technology Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C 7/10 (2006.01); H01B 1/20 (2006.01); H01C 7/02 (2006.01); H01C 7/00 (2006.01);
U.S. Cl.
CPC ...
H01B 1/20 (2013.01); H01C 7/021 (2013.01); H01C 7/028 (2013.01); H01C 7/008 (2013.01);
Abstract
A PTC composition comprises crystalline polymer and conductive filler. The conductive filler comprises tungsten carbide powder dispersed in the crystalline polymer, and the tungsten carbide powder comprises impurity of less than 7% by weight. The impurity comprises the materials other than tungsten monocarbide.