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. 02, 2020
Filed:
Mar. 02, 2017
Coorstek Kk, Tokyo, JP;
Hiroyuki Okajima, Yamagata, JP;
Kanta Doi, Yamagata, JP;
COORSTEK KK, Shinagawa-Ku, Tokyo, JP;
Abstract
Provided is a planar heater in which a carbon wire heat generator is housed in along quartz glass housing portion, and the planar heater suppresses disconnection of the carbon wire heat generator by limiting a contact region between the carbon wire heat generator and the long housing portion, and capable of efficient radiation heating. In the planar heater, the plurality of long housing portions is disposed on the same plane, and heat is generated by energizing the carbon wire heat generator, each of the plurality of long housing portions is formed in a polygonal circular arc shape in which a plurality of linear portions is connected at a bent portion, respectively, and the plurality of long housing portions is disposed along the circumferences of a plurality of concentric circles.