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. 05, 2017
Filed:
Apr. 20, 2015
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Koji Kato, Annaka, JP;
Waichi Yamamura, Annaka, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B 1/02 (2006.01); H05B 3/42 (2006.01); H05B 3/14 (2006.01);
U.S. Cl.
CPC ...
H05B 3/42 (2013.01); H05B 3/145 (2013.01); Y10T 428/24942 (2015.01); Y10T 428/30 (2015.01);
Abstract
A PBN-coated carbon heater is disclosed in which the carbon base body is anisotropic with respect to thermal expansion coefficient such that the maximum-to-minimum coefficient ratio is 1.02 through 1.50 for temperatures between 50 and 800 degree C.; preferably the carbon base body is also anisotropic with respect to electric resistivity such that the maximum-to-minimum resistivity ratio is greater than 1.04 but not greater than 1.51, and the direction in which the resistivity is maximum coincides the direction of the heater pattern in which the electricity runs the longest distance.