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. 09, 2006
Filed:
Apr. 25, 2002
Do-yun Kim, Seoul, KR;
Jong-ho Lee, Kyunggi-do, KR;
Soo-an Choi, Kyunggi-do, KR;
Joon-koo Han, Seoul, KR;
Chang-mo Ko, Kyunggi-do, KR;
Do-Yun Kim, Seoul, KR;
Jong-Ho Lee, Kyunggi-do, KR;
Soo-An Choi, Kyunggi-do, KR;
Joon-Koo Han, Seoul, KR;
Chang-Mo Ko, Kyunggi-do, KR;
LG Cable Ltd., Seoul, KR;
Abstract
PTC conductive polymer composition includes organic polymer containing polyolefin components essentially consisting of 30˜40 w % high density polyethylene (HDPE), 20˜40 w % low density polyethylene (LDPE) and 10˜30 w % ethylene-acrylic-acid (EAA) or ethylene-vinyl-acetate (EVA), and 20˜30 w % high or low density polyethylene which is denaturated into maleic anhydride compound; 60˜120 w % electrical conductive particles dispersed into the organic polymer, the electrical conductive particles by weight of the organic polymer; and 0.2˜0.5 w % peroxidic cross-linking agent added for cross-linking reaction by weight of the organic polymer. Thus, it becomes possible to control PTC characteristics such as switching temperature and trip time of an electrical device by suitably adjusting an added amount of the polyethylene, which is denaturated into maleic anhydride compound.