US Patent No: 4,293,357

Number of patents in Portfolio can not be more than 2000

Method for producing ceramic honeycomb filters

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Abstract

A ceramic honeycomb filter having a large filter area and a low pressure loss is produced by adhering a film on an opening end surface of a porous ceramic honeycomb structural body having a large number of parallel channels extending therethrough, boring holes at a given portion of the film or adhering a film bored at a given portion to an opening end surface of a porous ceramic honeycomb structural body, charging a sealing material into the channels through the bores in the film to seal an end portion of the given channels, and then sealing another end surface of the remaining channels with the sealing material in the same manner as described above.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NGK INSULATORS, LTD.NAGOYA3079

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Higuchi, Noboru Tsukuba, JP 12 394
Ohnishi, Masahiro Isehara, JP 30 428
Yano, Teruo Tokyo, JP 4 220

Cited Art

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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
JMP INDUSTRIES, INC. (47)
D444487 Diamond shape extruder insert 53 2000
D442612 Extruder plate for diamond shaped extruder insert 47 2000
D472252 Mesh ring extruder die 30 2002
D469452 Diamond shape extruder insert 33 2002
D469117 Diamond shape extruder insert 41 2002
D470869 Diamond shape extruder insert 39 2002
D470870 Diamond shape extruder insert 40 2002
D469453 Extruder plate for diamond shaped extruder insert 39 2002
D469454 Extruder plate for diamond shaped extruder insert 41 2002
D469116 Extruder plate for diamond shaped extruder insert 40 2002
D485286 Extruder plate for diamond shaped extruder insert 37 2003
D497376 Extruder plate for diamond shaped extruder insert 31 2003
D496377 Extruder plate for diamond shaped extruder insert 40 2003
D494198 Extruder plate for diamond shaped extruder insert 38 2003
D523452 Extruder plate for diamond shaped extruder insert 33 2004
D534562 Extruder plate for diamond shaped extruder insert 33 2005
D531197 Extruder plate for diamond shaped extruder insert 34 2006
D544005 Extruder insert 1 2006
D577751 Extruder insert 1 2007
D577375 Extruder insert 1 2007
D577044 Extruder insert 1 2007
D577045 Extruder plate for generally triangular shaped extruder inserts 1 2007
D573616 Extruder insert 1 2007
D573617 Extruder insert 1 2007
D569885 Extruder plate for generally triangular shaped extruder inserts 1 2007
D568349 Extruder plate for generally triangular shaped extruder inserts 2 2007
D566145 Extruder plate for generally triangular shaped extruder inserts 1 2007
D565610 Extruder plate for generally triangular shaped extruder inserts 2 2007
D565611 Extruder plate for generally triangular shaped extruder inserts 2 2007
D565612 Extruder plate for generally triangular shaped extruder inserts 2 2007
D565614 Extruder plate for generally triangular shaped extruder inserts 1 2007
D565615 Extruder plate for generally triangular shaped extruder inserts 1 2007
D565067 Extruder plate for generally triangular shaped extruder inserts 2 2007
D565068 Extruder plate for generally triangular shaped extruder inserts 2 2007
D564549 Extruder insert 4 2007
D564550 Extruder plate for generally triangular shaped extruder inserts 2 2007
D564551 Extruder plate for generally triangular shaped extruder inserts 2 2007
D563441 Extruder plate for generally triangular shaped extruder inserts 2 2007
D563442 Extruder plate for generally triangular shaped extruder inserts 1 2007
D562857 Extruder plate for generally triangular shaped extruder inserts 2 2007
D562858 Extruder plate for generally triangular shaped extruder inserts 1 2007
D562859 Extruder plate for generally triangular shaped extruder inserts 2 2007
D562860 Extruder plate for generally triangular shaped extruder inserts 2 2007
D562861 Extruder plate for generally triangular shaped extruder inserts 1 2007
D562364 Extruder insert 1 2007
D562370 Extruder plate for generally triangular shaped extruder inserts 2 2007
8,186,991 Extruder system and cutting assembly 0 2010
 
CORNING GLASS WORKS (9)
4,557,773 Method for selectively manifolding honeycomb structures 50 1981
4,411,856 Method and apparatus for high speed manifolding of honeycomb structures 29 1981
4,455,180 Method of fabricating a sintered and selectively plugged honeycomb structure 28 1981
4,432,918 Methods for fabricating selectively plugged honeycomb structures 11 1981
4,427,728 Masking apparatus for selectively charging honeycomb structures 14 1981
4,752,516 Apparatus for high speed manifolding of honeycomb structures 11 1983
4,557,682 Apparatus for fabrication of solid particulate filters 7 1983
4,557,962 Masking apparatus for selectively charging honeycomb structures 11 1983
4,670,205 Method of forming a mask 4 1985
 
CORNING INCORPORATED (9)
5,021,204 Method for selectively charging honeycomb structures 25 1981
5,393,586 Localized electrical heating of honeycomb structures 10 1992
6,627,123 Method for selectively plugging a honeycomb 1 2002
6,666,070 Method for testing the integrity of DPFs 9 2002
6,696,132 Honeycomb with varying channel size and die for manufacturing 27 2002
6,843,822 Filter with varying cell channels 26 2003
7,294,301 Die assembly and method for forming honeycomb filters 0 2005
7,922,951 Plugging methods and apparatus for particulate filters 1 2005
7,297,299 Composition and method for making ceramic filters 0 2006
 
NGK INSULATORS, LTD. (9)
4,340,403 Ceramic honeycomb filter 34 1980
4,568,402 Method of sealing open ends of ceramic honeycomb structural body 25 1983
4,559,193 Method of sealing open ends of ceramic honeycomb structural body 50 1983
4,522,668 Method of producing ceramic filter 2 1983
4,563,414 Method of producing a mask to be used for the production of a ceramic filter 14 1983
4,818,317 Method for producing ceramic honeycomb structural body 6 1987
6,797,666 Honeycomb filter and process for production thereof 16 2002
7,507,460 Plugged honeycomb structure and method of manufacturing the same 0 2003
7,556,664 Sealed honeycomb structure and method of producing the same 0 2004
 
DOW GLOBAL TECHNOLOGIES INC. (8)
6,306,335 Mullite bodies and methods of forming mullite bodies 15 1999
6,953,554 Catalytic devices and method of making said devices 3 2000
6,596,665 Mullite bodies and methods of forming mullite bodies 14 2001
6,840,976 Method of making wall-flow monolith filter 10 2002
6,803,015 Method of making wall-flow monolith filter 3 2002
7,425,297 Method of forming mullite bodies 1 2003
7,528,087 Porous mullite bodies and methods of forming them 0 2004
7,485,594 Porous mullite bodies and methods of forming them 1 2007
 
IBIDEN CO., LTD. (5)
7,534,482 Honeycomb structural body 1 2003
7,387,657 Honeycomb structural body 4 2003
7,521,025 Honeycomb structural body 6 2004
7,455,709 Honeycomb structural body 7 2004
7,727,451 Sealing method of honeycomb molded body, and method for manufacturing cell-sealed honeycomb fired body 1 2007
 
SCHOTT GLAS (3)
5,364,573 Process and apparatus for producing a filter in the form of a monolithic honeycomb body 17 1993
5,433,904 Process for sealing ducts of a monolithic honeycomb body 19 1993
5,498,288 Apparatus for producing a filter in the form of a monolithic honeycomb body 11 1994
 
WASTECH INTERNATIONAL, INC. (3)
5,843,304 Filtration and treatment system 20 1995
5,725,762 Separation treatment system 16 1995
5,853,579 Treatment system 18 1996
 
DENSO CORPORATION (2)
6,849,222 Method of manufacturing ceramic honeycomb structure and device for forming through holes 2 2001
7,159,390 Exhaust gas cleaner for internal combustion engine with particulate filter having heat-absorbing area 2 2004
 
GENERAL MOTORS CORPORATION (2)
4,364,761 Ceramic filters for diesel exhaust particulates and methods for making 66 1981
4,403,008 Flexible cell plugging mask for use in fabricating particulate filters 18 1982
 
SIEMENS ENERGY, INC. (2)
6,846,574 Honeycomb structure thermal barrier coating 16 2001
7,510,743 Process for manufacturing device having honeycomb-structure thermal barrier coating 0 2004
 
THE DOW CHEMICAL COMPANY (2)
5,098,455 Regenerable exhaust gas filter element for diesel engines 59 1990
5,198,007 Filter including a porous discriminating layer on a fused single crystal acicular ceramic support, and method for making the same 49 1991
 
ASAHI GLASS COMPANY, LIMITED (1)
7,118,706 Method of sealing a silicon nitride filter 2 2002
 
CATALER CORPORATION (1)
7,781,014 Process for producing a filter catalyst 0 2005
 
CATERPILLAR INC. (1)
5,065,574 Particulate trap regeneration apparatus and method 28 1990
 
CERCONA, INC., A CORP. OF OH (1)
4,923,487 Cross flow diesel particulate trap 28 1988
 
DOW GLOBAL TECHNOLOGIES LLC (1)
7,947,620 Mullite bodies and methods of forming mullite bodies 0 2008
 
HITACHI METALS, LTD. (1)
8,398,797 Production method of cordierite-based ceramic honeycomb filter 0 2007
 
HPD, LLC (1)
6,695,967 Reaction bonded alumina filter and membrane support 14 2002
 
J M P INDUSTRIES, INC. (1)
D452257 Extruder plate for diamond shaped extruder insert 50 2001
 
MANN+HUMMEL GMBH (1)
7,913,377 Method for producing a ceramic filter element 0 2007
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
4,718,926 Exhaust gas filter for diesel engine 21 1986
 
NIPPON SOKEN, INC. (1)
4,464,185 Exhaust gas filter 16 1982
 
NIPPONDENSO CO., LTD. (1)
5,240,540 Method for producing filter element 8 1991
 
TYK CORPORATION (1)
5,733,352 Honeycomb structure, process for its production, its use and heating apparatus 23 1996