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:
Jul. 26, 2022
Filed:
Aug. 14, 2019
Lg Electronics Inc., Seoul, KR;
Misun Song, Seoul, KR;
Changwoo Jeong, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
An electric heater includes a substrate, and a plane heating element that is located at a surface of the substrate and that includes a pattern portion having a start point and an end point that are connected to each other. The pattern portion includes a plurality of tracks that are spaced apart from one another, that have an arc shape, and that are arranged at positions from an inner side of the pattern portion to an outer side of the pattern portion, where lengths of the plurality of tracks increase from the inner side to the outer side. The plurality of tracks include at least two tracks that are arranged respectively about a first center of curvature and a second center of curvature that is different from the first center of curvature.