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:
Mar. 16, 1993
Filed:
May. 15, 1990
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A heat generator comprising a quartz tube containing an electric resistor and a catalyst coating layer comprising at least active alumina, silica and a platinum group metal, formed on the surface of the quartz tube can heat a material to be heated and the catalyst coating layer itself because of the catalyst coating layer being provided on the surface of the quartz tube. The catalyst coating layer surrounds the quartz tube and thus efficiently absorbs heat from the electric resistor by radiation and heat conductance, whereby the catalyst coating layer can be heated to the activation temperature within a short time. Furthermore, the heat generator also heats air around the heat generator to circulate the air as a convection air stream around the heat generator. When the convection air stream contacts the catalyst in the catalyst coating layer heated to higher than the activation temperature by heating of the heat generator, smelly components or noxious components in the air stream are oxidized and purified by the catalytic action before leaving the heat generator.