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:
Sep. 02, 2025
Filed:
Jan. 05, 2023
Polytronics Technology Corp., Hsinchu, TW;
Chen-Nan Liu, Pitou Township, TW;
Yung-Hsien Chang, Douliu, TW;
Hsiu-Che Yen, Taoyuan, TW;
Cheng-Yu Tung, Tainan, TW;
Chia-Yuan Lee, Hsinchu, TW;
Yu-Chieh Fu, Hsinchu, TW;
Yao-Te Chang, Linnei Township, TW;
Fu-Hua Chu, Taipei, TW;
POLYTRONICS TECHNOLOGY CORP., Hsinchu, TW;
Abstract
An over-current protection device comprises first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, a conductive filler and a titanium-containing inner filler. The polymer matrix has a fluorine-free polyolefin-based polymer. The titanium-containing inner filler has a compound represented by a general formula of MTiO, wherein the M represents transition metal or alkaline earth metal. The total volume of the PTC material layer is calculated as 100%, and the titanium-containing inner filler accounts for 1-9% by volume of the PTC material layer.