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:
Sep. 13, 2005
Filed:
Mar. 01, 2002
Toshiyuki Hamanaka, Suzuka, JP;
Takashi Harada, Nagoya, JP;
Toshiyuki Hamanaka, Suzuka, JP;
Takashi Harada, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A honeycomb filter for exhaust gas purification, possessing a honeycomb structure () having a plurality of through-holes which are separated from each other by porous partition walls and plugged alternately at the exhaust gas inlet face () and the exhaust gas outlet face (), wherein the honeycomb structure () has a slit () possessing an opening at least at the exhaust gas inlet face (), and the slit () is partially filled with a filler () in a depth of 3 to 25 times the width () of slit from the exhaust gas inlet face () toward a flow direction () of exhaust gas and a gap () is formed inside from a portion of the slit filled with the filler (). This honeycomb filter for exhaust gas purification has high purification ability, yet possesses high thermal shock resistance, and can be used continuously over a long period.