US Patent No: 4,568,402

Number of patents in Portfolio can not be more than 2000

Method of sealing open ends of ceramic honeycomb structural body

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Importance

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Abstract

The disclosed method seals preselected open ends of channels of a ceramic honeycomb structural body with cordierite-forming sealing material batch, and fires the honeycomb structural body with the thus sealed ends, so as to convert the sealing material batch into cordierite.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NGK INSULATORS, LTD.NAGOYA3079

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hamanaka, Toshiyuki Suzuka, JP 28 560
Ogawa, Yutaka Chitose, JP 42 428
Yamada, Shunichi Hokkaido, JP 18 306

Cited Art

Patent Info (Count) # Cites Year
 
NGK INSULATORS, LTD. (3)
4,280,845 Cordierite ceramic 57 1979
4,293,357 Method for producing ceramic honeycomb filters 114 1980
4,340,403 Ceramic honeycomb filter 34 1980
 
CORNING GLASS WORKS (1)
4,297,140 Ceramic foam cement 27 1980

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
NGK INSULATORS, LTD. (9)
4,818,317 Method for producing ceramic honeycomb structural body 6 1987
5,720,787 Exhaust gas purifying filter using honeycomb monolith with random length sealing portions 28 1996
7,122,237 Honeycomb filter and method for manufacturing the same 3 2001
7,300,487 Sealing material, method for sealing honeycomb structure and sealed honeycomb structure 0 2003
7,497,999 Honeycomb structural body, method of manufacturing the structural body, and catalyst body using the structural body 2 2003
7,297,175 Exhaust gas purifying filter 4 2003
7,611,560 Method of manufacturing plugged honeycomb structure, and plugged honeycomb structure 5 2006
7,438,966 Honeycomb segment and honeycomb structure using the honeycomb segment 0 2006
8,128,723 Partially plug-less DPF 1 2010
 
CORNING INCORPORATED (3)
5,409,870 Modified cordierite precursors 31 1992
8,242,038 Low thermal expansion high strength honeycomb cement and method therefor 0 2008
8,143,180 Honeycomb cement with ceramic-forming crystallizable glass and method therefor 0 2008
 
DUPONT LANXIDE COMPOSITES, L.P. (3)
5,079,064 Thermal shock resistant ceramic honeycomb structures of cordierite, mullite and corundum 16 1990
5,168,092 Catalyst coated thermal shock resistant ceramic honeycomb structures of cordierite, mullite and corundum 4 1991
5,370,920 Process for producing catalyst coated thermal shock resistant ceramic honeycomb structures of cordierite, mullite and corundum 10 1992
 
BASF CORPORATION (1)
7,854,801 Uses of high mullite index calcined kaolin 0 2005
 
CORNING GLASS WORKS (1)
4,673,658 Cordierite ceramics containing silicon carbide whisker reinforcement 29 1986
 
CUMMINS FILTRATION IP, INC. (1)
7,806,956 Tuning particulate filter performance through selective plugging and use of multiple particulate filters to reduce emissions and improve thermal robustness 2 2007
 
E. I. DU PONT DE NEMOURS AND COMPANY (1)
4,814,303 Anorthite-cordierite based ceramics from zeolites 13 1987
 
EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH (1)
7,981,498 Honeycomb body with internal cavities 0 2007
 
HITACHI METALS, LTD. (1)
6,827,754 Ceramic honeycomb filter 26 2002
 
IBIDEN CO., LTD. (1)
7,550,026 Honeycomb filter 11 2007
 
MINNESOTA MINING AND MANUFACTURING COMPANY (1)
4,957,554 Dimensionally-controlled ceramics 16 1989
 
NIPPONDENSO CO., LTD. (1)
4,632,683 Exhaust gas purifying filter and production of the same 42 1985
 
TOKUYAMA SODA KABUSHIKI KAISHA (1)
5,166,107 Process for preparation of anorthite sintered body 6 1988