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:
Jun. 23, 2020
Filed:
Jun. 12, 2015
Innovative Sensor Technology Ist Ag, Ebnat-Kappel, CH;
Innovative Sensor Technology IST IG, Ebnat-Kappel, CH;
Abstract
The invention relates to a planar heating element () comprising a PTC resistive structure (), which is arranged in a defined surface region () of a first surface () of a support substrate (), wherein electrical connection contacts () for connection to an electrical voltage source () are associated with the PTC resistive structure (), wherein the PTC resistive structure ()—starting from the two electrical connection contacts ()—has at least one internal conductive trace () and a parallel connected, external conductive trace (), wherein the internal conductive trace () has a greater resistance than the external conductive trace () and wherein the resistances of the internal conductive trace () and external conductive trace () are so sized that upon applying a voltage an essentially uniform temperature distribution is present within the defined surface region ().