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:
Oct. 30, 2012
Filed:
Apr. 20, 2007
Tadahiro Ohmi, Miyagi, JP;
Yasuyuki Shirai, Miyagi, JP;
Sadao Kobayashi, Tokyo, JP;
Yoshihide Wakayama, Tokyo, JP;
Kazutaka Uekado, Osaka, JP;
Tadahiro Ohmi, Miyagi, JP;
Yasuyuki Shirai, Miyagi, JP;
Sadao Kobayashi, Tokyo, JP;
Yoshihide Wakayama, Tokyo, JP;
Kazutaka Uekado, Osaka, JP;
National University Corporation Tohoku University, Miyagi, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A heating device includes a heat resisting vacuum insulator () wound around the outer periphery of an electric heater () disposed along the outer wall of an exhaust pipe (), wherein the electric heater () has a resistance heating element and a heat resisting electric insulator covering this resistance heating element, and the heat resisting vacuum insulator () includes a hollow platy covering material air-tightly sealed thereinside by a metal seat () having a heat resisting temperature of at least 100° C., and a fibrous or granular filling material () filled in the hollow portion of this covering material and having a heat resisting temperature of at least 100° C., the inside of the covering material being kept in a vacuum state.