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:
Feb. 24, 2015
Filed:
Feb. 14, 2011
Noriaki Kumagai, Susono, JP;
Mamoru Yoshioka, Susono, JP;
Noriaki Kumagai, Susono, JP;
Mamoru Yoshioka, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
The electricity is suppressed from flowing through a case () of an electric heating catalyst (). The electric heating catalyst () comprises a heat generating element () which generates heat by applying electricity; a case () which accommodates the heat generating element (); an inner tube () which is provided between the heat generating element () and the case (); and a mat () which is provided between the heat generating element () and the inner tube () and between the inner tube () and the case () and which insulates the electricity; wherein the inner tube () protrudes from the mat () toward an upstream side and a downstream side in a flow direction of an exhaust gas, the inner tube () is composed of at least two substances having different thermal conductivities, the substance () having the lower thermal conductivity is arranged on an inner side as compared with a surface, and the substance () having the higher thermal conductivity is arranged to surround the substance having the lower thermal conductivity.