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:
Nov. 30, 2010
Filed:
Jun. 16, 2008
Koji Tsuneyoshi, Tajimi, JP;
Osamu Takagi, Tajimi, JP;
Koji Tsuneyoshi, Tajimi, JP;
Osamu Takagi, Tajimi, JP;
TYK Corporation, Tokyo, JP;
Abstract
There is provided a honeycomb structure in which filtration efficiency of particulate matters (PM) in the exhaust gas is high, initial pressure loss is low and increase in pressure loss in accompanied with the trapping of PMs is suppressed. The honeycomb structure includes a plurality of cells partitioned by a plurality of partition walls which are made of silicon carbide porous ceramics and are lined up in a single direction, an average pore diameter of the partition walls measured by mercury porosimetry is 1 μm to 15 μm, a standard deviation in a pore diameter distribution is 0.20 or less when the pore diameter is represented by common logarithm, and percentage of the pores having the pore diameter of less than 2 μm relative to the entire pores is 5 vol % or less.