Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takashi Mizutani0
Date of Patent
June 16, 2009
Patent Application Number
10592804
Date Filed
March 23, 2005
Patent Primary Examiner
Patent abstract
A ceramic filter having a honeycomb structure 10 having a large number of cells which are extending in the longitudinal direction and which are alternatively plugged on an exhaust gas G inlet side end face 10a and an exhaust gas G outlet side end face 10b to form plugged portions. The depth of the inlet side plugged portions (filler 16) is formed deeper than that of the outlet side plugged portions (filler 16). Since the exhaust gas G tends to have a decreased turbulent flow and an increased laminar flow on the inlet side, a partial accumulation of Oil-Ash on portions near an outlet side end face can be inhibited.
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