ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,501,519, issued on Dec. 16, was assigned to Henkel AG & Co. KGaA (Duesseldorf, Germany).
"Positive temperature coefficient composition" was invented by Rudolf Warmold Oldenzijl (Hoogezand, Netherlands), Stijn Gillissen (Hasselt, Belgium) and Gunther Dreezen (Balen-Olmen, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a positive temperature coefficient composition comprising a semi-crystalline material, at least one binder, from 0.5 to 9.5% by weight of an electronically conductive material and a solvent. Furthermore, the present invention relates to use of a positive temperature coefficient composition according ...