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. 11, 2026
Filed:
Sep. 13, 2023
Polytronics Technology Corp., Hsinchu, TW;
Chia-Yuan Lee, Hsinchu City, TW;
Hsiu-Che Yen, Taoyuan City, TW;
Yung-Hsien Chang, Douliu City, TW;
Cheng-Yu Tung, Tainan City, TW;
Chen-Nan Liu, Pitou Township, TW;
Chingting Chiu, Taoyuan City, TW;
Yao-Te Chang, Linnei Township, TW;
Fu-Hua Chu, Taipei City, TW;
POLYTRONICS TECHNOLOGY CORP., Hsinchu, TW;
Abstract
An over-current protection device includes an electrode layer and a heat-sensitive layer. The heat-sensitive layer contacts a top metal layer and a bottom metal layer of the electrode layer, and is laminated therebetween. In addition, the heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a conductive filler. The polymer matrix includes a first fluoropolymer, by which the over-current protection device has a starting jump temperature of resistance ranging from 184° C. to 192° C. The conductive filler includes carbon black and a metal compound, thereby forming an electrically conductive path in the heat-sensitive layer.