Porous ceramic honeycomb filter and method of producing the same

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United States of America Patent

PATENT NO 5069697
SERIAL NO

07389336

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Abstract

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A porous ceramic honeycomb filter having a chemical composition consisting of, as main components, 42-56 wt % SiO.sub.2, 30-45 wt % Al.sub.2 O.sub.3, and 12-16 wt % MgO and containing cordierite as a main component of a crystalline phase. The porous ceramic honeycomb filter has a porosity of at least 40% and not greater than 55%. The volume of pores having a diameter not larger than 2 .mu.m in the filter is not larger than 0.015 cc/g to thereby improve the collecting time with low pressure loss and high collecting efficiency.

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Patent Owner(s)

Patent OwnerAddress
NGK INSULATORS LTDJAPAN'S AICHI AICHI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hamaguchi, Kunikazu Nagoya, JP 8 271
Hamanaka, Toshiyuki Suzuka, JP 28 742
Harada, Takashi Nagoya, JP 351 4614

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