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:
Dec. 14, 2021
Filed:
Nov. 06, 2018
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Ryuuji Hayahara, Tokyo, JP;
SUMITOMO OSAKA CEMENT CO., LTD., Tokyo, JP;
Abstract
This electrostatic chuck device includes an electrostatic chuck part which has a placement surface on one main surface thereof to place a plate-shaped sample and has an electrode for electrostatic attraction; a temperature controlling base part configured to cool the electrostatic chuck part; and a heater element disposed between the electrostatic chuck part and the temperature controlling base part, in which the electrostatic chuck part and the temperature controlling base part are parts in which a plurality of through holes communicating in a thickness direction are provided, the heater element has a first site formed in a band shape and a second site continuous with the first site, wherein the second site is formed to have in a band shape and a closed ring shape, one through hole of the through holes is disposed on an inner peripheral side of the second site in plan view.