WO2008137626A3 - Improved honeycomb filters - Google Patents

Improved honeycomb filters Download PDF

Info

Publication number
WO2008137626A3
WO2008137626A3 PCT/US2008/062337 US2008062337W WO2008137626A3 WO 2008137626 A3 WO2008137626 A3 WO 2008137626A3 US 2008062337 W US2008062337 W US 2008062337W WO 2008137626 A3 WO2008137626 A3 WO 2008137626A3
Authority
WO
WIPO (PCT)
Prior art keywords
arcs
honeycomb filters
circular
improved honeycomb
improved
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2008/062337
Other languages
French (fr)
Other versions
WO2008137626A2 (en
Inventor
Jeffery D. Zawisza
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Global Technologies LLC
Original Assignee
Dow Global Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Global Technologies LLC filed Critical Dow Global Technologies LLC
Priority to CN2008800147901A priority Critical patent/CN101687132B/en
Priority to CA002683133A priority patent/CA2683133A1/en
Priority to EP08747438A priority patent/EP2160231A2/en
Priority to JP2010506666A priority patent/JP5714897B2/en
Publication of WO2008137626A2 publication Critical patent/WO2008137626A2/en
Publication of WO2008137626A3 publication Critical patent/WO2008137626A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2498—The honeycomb filter being defined by mathematical relationships
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/2455—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the whole honeycomb or segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/2486—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure characterised by the shapes or configurations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/30—Exhaust treatment

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Catalysts (AREA)

Abstract

An improved ceramic honeycomb filter wherein the ceramic honeycomb filter has at least one outer corner having a shape, when viewed looking down the channels of the honeycomb, that is comprised of (i) at least two circular arcs wherein at least one of said circular arcs has a different radius of curvature than the other circular arc or arcs, (ii) a non-circular arc, or (iii) at least four straight chamfers in the absence of any arcs.
PCT/US2008/062337 2007-05-04 2008-05-02 Improved honeycomb filters Ceased WO2008137626A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2008800147901A CN101687132B (en) 2007-05-04 2008-05-02 Improved honeycomb filters
CA002683133A CA2683133A1 (en) 2007-05-04 2008-05-02 Improved honeycomb filters
EP08747438A EP2160231A2 (en) 2007-05-04 2008-05-02 Improved honeycomb filters
JP2010506666A JP5714897B2 (en) 2007-05-04 2008-05-02 Improved honeycomb filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92765307P 2007-05-04 2007-05-04
US60/927,653 2007-05-04

Publications (2)

Publication Number Publication Date
WO2008137626A2 WO2008137626A2 (en) 2008-11-13
WO2008137626A3 true WO2008137626A3 (en) 2009-09-24

Family

ID=39938569

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/062337 Ceased WO2008137626A2 (en) 2007-05-04 2008-05-02 Improved honeycomb filters

Country Status (7)

Country Link
US (1) US8016906B2 (en)
EP (1) EP2160231A2 (en)
JP (1) JP5714897B2 (en)
KR (1) KR20100017601A (en)
CN (1) CN101687132B (en)
CA (1) CA2683133A1 (en)
WO (1) WO2008137626A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8277743B1 (en) * 2009-04-08 2012-10-02 Errcive, Inc. Substrate fabrication
EP2368619B1 (en) * 2010-03-26 2014-06-25 Imerys Ceramic honeycomb structures
US9833932B1 (en) 2010-06-30 2017-12-05 Charles E. Ramberg Layered structures
KR101926698B1 (en) 2011-08-26 2018-12-07 다우 글로벌 테크놀로지스 엘엘씨 Improved process for preparing ceramic bodies
DE112013002501T5 (en) 2012-06-28 2015-04-09 Dow Global Technologies Llc Method for bonding arrangements of ceramic filters
JP6068067B2 (en) * 2012-09-06 2017-01-25 日本碍子株式会社 Plugged honeycomb structure
US9808794B2 (en) * 2013-09-23 2017-11-07 Corning Incorporated Honeycomb ceramic substrates, honeycomb extrusion dies, and methods of making honeycomb ceramic substrates
CN108286465A (en) 2017-12-27 2018-07-17 山东国瓷功能材料股份有限公司 A kind of asymmetric ceramic honey comb wall-flow filter of anti-thermal shock
JP7504826B2 (en) * 2021-03-23 2024-06-24 日本碍子株式会社 Honeycomb Filter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042301A1 (en) * 1980-06-16 1981-12-23 Ngk Insulators, Ltd. Ceramic honeycomb filters and the production thereof
US4902314A (en) * 1987-11-25 1990-02-20 Hidetoshi Nakajima Gas filter
EP1422390A1 (en) * 2001-08-30 2004-05-26 Ngk Insulators, Ltd. HIGH STRENGTH HONEYCOMB STRUCTURE, METHOD OF MOLDING THE SAME, AND HONEYCOMB STRUCTURE CONVERTER
US20050247038A1 (en) * 2004-05-06 2005-11-10 Ibiden Co., Ltd. Honeycomb structural body and manufacturing method thereof
EP1604719A2 (en) * 2002-03-15 2005-12-14 Ibiden Co., Ltd. Ceramic filter for exhaust gas purification
WO2006093231A1 (en) * 2005-03-03 2006-09-08 Asahi Glass Company, Limited Sintered body with spacers, and production method and joining method for the same
US20070128405A1 (en) * 2005-11-18 2007-06-07 Hiroshi Sakaguchi Honeycomb structured body, method for manufacturing honeycomb structured body and exhaust gas purifying device

Family Cites Families (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE623896A (en) 1961-10-23
US3899326A (en) * 1973-03-30 1975-08-12 Corning Glass Works Method of making monolithic honeycombed structures
US3903341A (en) * 1973-09-20 1975-09-02 Universal Oil Prod Co Ceramic honeycomb structure for accommodating compression and tension forces
US4001028A (en) * 1974-05-28 1977-01-04 Corning Glass Works Method of preparing crack-free monolithic polycrystalline cordierite substrates
JPS6034510B2 (en) * 1976-06-10 1985-08-09 日本碍子株式会社 Extrusion manufacturing method of ceramic honeycomb structure
JPS5546338A (en) * 1978-09-28 1980-04-01 Ngk Insulators Ltd Heat and shock resistant, revolving and heat-regenerating type ceramic heat exchanger body and its manufacturing
US4329162A (en) * 1980-07-03 1982-05-11 Corning Glass Works Diesel particulate trap
US4381815A (en) * 1980-11-10 1983-05-03 Corning Glass Works Thermal shock resistant honeycomb structures
US4333518A (en) * 1980-11-10 1982-06-08 Corning Glass Works Method for improving thermal shock resistance of honeycombed structures formed from joined cellular segments
JPS6078707A (en) * 1983-10-07 1985-05-04 日本碍子株式会社 Ceramic honeycomb structure and manufacture thereof and rotary heat accumulation type ceramic heat exchange body utilizing said structure and extrusion molding die for said heat exchange body
DE3407172C2 (en) * 1984-02-28 1986-09-04 Degussa Ag, 6000 Frankfurt Device for cleaning exhaust gases from diesel engines
US4786542A (en) * 1986-02-20 1988-11-22 Ngk Insulators, Ltd. Setters and firing of ceramic honeycomb structural bodies by using the same
JPH061150B2 (en) * 1986-12-27 1994-01-05 日本碍子株式会社 Dielectric drying method of honeycomb structure
JP2505261B2 (en) * 1988-09-29 1996-06-05 日本碍子株式会社 Ceramic heat exchanger and manufacturing method thereof
DE3908887A1 (en) * 1989-03-17 1990-09-20 Eberspaecher J DEVICE FOR CATALYTIC DETOXIFICATION OR THE LIKE OF COMBUSTION ENGINE EXHAUST WITH TWO EXHAUST TREATMENT BODIES AND A PROTECTIVE RING BETWEEN
US5340516A (en) * 1989-07-28 1994-08-23 Engelhard Corporation Thermal shock and creep resistant porous mullite articles prepared from topaz and process for manufacture
CA2020453A1 (en) * 1989-07-28 1991-01-29 Bulent O. Yavuz Thermal shock and creep resistant porous mullite articles
US5098455A (en) * 1990-12-21 1992-03-24 The Dow Chemical Company Regenerable exhaust gas filter element for diesel engines
US5194154A (en) * 1991-12-05 1993-03-16 The Dow Chemical Company Structure for filter or heat exchanger, composed of a fused single crystal acicular ceramic
US5198007A (en) * 1991-12-05 1993-03-30 The Dow Chemical Company Filter including a porous discriminating layer on a fused single crystal acicular ceramic support, and method for making the same
JP3121497B2 (en) * 1994-07-14 2000-12-25 イビデン株式会社 Ceramic structure
US5538681A (en) * 1994-09-12 1996-07-23 Corning Incorporated Drying process to produce crack-free bodies
US5914187A (en) * 1996-01-12 1999-06-22 Ibiden Co., Ltd. Ceramic structural body
FR2796638B1 (en) * 1999-07-21 2001-09-14 Ceramiques Tech Et Ind S A HONEYCOMB MONOLITH STRUCTURE IN POROUS CERAMIC MATERIAL, AND USE AS A PARTICLE FILTER
US6306335B1 (en) * 1999-08-27 2001-10-23 The Dow Chemical Company Mullite bodies and methods of forming mullite bodies
DE60033977T2 (en) * 1999-09-29 2007-12-20 Ibiden Co., Ltd., Ogaki Honeycomb filter and arrangement of ceramic filters
BR0016908B1 (en) * 1999-12-23 2009-08-11 catalytic device and catalytic converter.
JP3889194B2 (en) * 2000-01-13 2007-03-07 日本碍子株式会社 Honeycomb structure
WO2002011884A1 (en) * 2000-08-03 2002-02-14 Ngk Insulators, Ltd. Ceramic honeycomb structure
JP4404497B2 (en) 2001-03-01 2010-01-27 日本碍子株式会社 Honeycomb filter and manufacturing method thereof
US20020172633A1 (en) * 2001-03-06 2002-11-21 Koermer Gerald S. Vehicular atmosphere cleansing system
JP2002273130A (en) * 2001-03-22 2002-09-24 Ngk Insulators Ltd Honeycomb structure
US6764743B2 (en) * 2001-05-01 2004-07-20 Ngk Insulators, Ltd. Porous honeycomb structure and process for production thereof
JP4246425B2 (en) * 2001-10-15 2009-04-02 日本碍子株式会社 Honeycomb filter
JP3893049B2 (en) * 2001-11-20 2007-03-14 日本碍子株式会社 Honeycomb structure and manufacturing method thereof
US6890616B2 (en) * 2001-12-03 2005-05-10 Hitachi Metals Ltd. Ceramic honeycomb filter and its structure
US6736875B2 (en) 2001-12-13 2004-05-18 Corning Incorporated Composite cordierite filters
JP4157304B2 (en) * 2002-02-05 2008-10-01 日本碍子株式会社 Honeycomb structure
JP2003260322A (en) * 2002-03-08 2003-09-16 Ngk Insulators Ltd Honeycomb structure, method for manufacturing the same, and system for cleaning waste gas
KR100965042B1 (en) 2002-03-25 2010-06-21 다우 글로벌 테크놀로지스 인크. Mullite bodies and methods of forming mullite bodies
JP4282941B2 (en) * 2002-03-27 2009-06-24 日本碍子株式会社 Honeycomb structure, manufacturing method thereof, and catalyst body using the same
WO2003084640A1 (en) * 2002-04-09 2003-10-16 Ibiden Co., Ltd. Honeycomb filter for clarification of exhaust gas
US6849181B2 (en) 2002-07-31 2005-02-01 Corning Incorporated Mullite-aluminum titanate diesel exhaust filter
KR100960769B1 (en) 2002-07-31 2010-06-01 코닝 인코포레이티드 Aluminum Titanate-Based Ceramic Products
CN1322909C (en) * 2002-09-13 2007-06-27 揖斐电株式会社 honeycomb structure
WO2004024295A1 (en) * 2002-09-13 2004-03-25 Ibiden Co., Ltd. Honeycomb structure
WO2004073969A2 (en) * 2003-02-18 2004-09-02 Corning Incorporated Ceramic honeycomb body and process for manufacture
DE602004011997T2 (en) * 2003-06-05 2009-02-26 Ibiden Co., Ltd., Ogaki HONEYCOMB BODY STRUCTURE
US7083842B2 (en) * 2003-07-28 2006-08-01 Ngk Insulators, Ltd. Honeycomb structure and process for production thereof
US7387829B2 (en) * 2004-01-13 2008-06-17 Ibiden Co., Ltd. Honeycomb structure, porous body, pore forming material for the porous body, and methods for manufacturing the pore forming material, the porous body and the honeycomb structure
CN1296146C (en) * 2004-02-24 2007-01-24 中国科学院生态环境研究中心 Method and equipment for coating slurry layer on cellular carrier of ceramics
US7341970B2 (en) 2004-03-31 2008-03-11 Corning Incorporated Low thermal expansion articles
DE102004037480A1 (en) * 2004-08-03 2006-03-02 Zeuna-Stärker GmbH & Co KG A vehicle exhaust gas purification device and method of manufacturing the same
JP5026674B2 (en) * 2005-03-04 2012-09-12 日本碍子株式会社 Honeycomb structure
CN100537482C (en) * 2005-06-24 2009-09-09 揖斐电株式会社 honeycomb structure
FR2906159B1 (en) * 2006-09-27 2008-10-31 Saint Gobain Ct Recherches MONOLITHIC ELEMENT WITH REINFORCED CORNERS FOR FILTRATION OF PARTICLES

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042301A1 (en) * 1980-06-16 1981-12-23 Ngk Insulators, Ltd. Ceramic honeycomb filters and the production thereof
US4902314A (en) * 1987-11-25 1990-02-20 Hidetoshi Nakajima Gas filter
EP1422390A1 (en) * 2001-08-30 2004-05-26 Ngk Insulators, Ltd. HIGH STRENGTH HONEYCOMB STRUCTURE, METHOD OF MOLDING THE SAME, AND HONEYCOMB STRUCTURE CONVERTER
EP1604719A2 (en) * 2002-03-15 2005-12-14 Ibiden Co., Ltd. Ceramic filter for exhaust gas purification
US20050247038A1 (en) * 2004-05-06 2005-11-10 Ibiden Co., Ltd. Honeycomb structural body and manufacturing method thereof
WO2006093231A1 (en) * 2005-03-03 2006-09-08 Asahi Glass Company, Limited Sintered body with spacers, and production method and joining method for the same
EP1854773A1 (en) * 2005-03-03 2007-11-14 Asahi Glass Co., Ltd. Sintered body with spacers, and production method and joining method for the same
US20070128405A1 (en) * 2005-11-18 2007-06-07 Hiroshi Sakaguchi Honeycomb structured body, method for manufacturing honeycomb structured body and exhaust gas purifying device

Also Published As

Publication number Publication date
WO2008137626A2 (en) 2008-11-13
JP5714897B2 (en) 2015-05-07
JP2010525943A (en) 2010-07-29
US8016906B2 (en) 2011-09-13
KR20100017601A (en) 2010-02-16
EP2160231A2 (en) 2010-03-10
US20080271422A1 (en) 2008-11-06
CA2683133A1 (en) 2008-11-13
CN101687132A (en) 2010-03-31
CN101687132B (en) 2012-09-05

Similar Documents

Publication Publication Date Title
WO2008137626A3 (en) Improved honeycomb filters
WO2008126309A1 (en) Particulate mixture and honeycomb structures
WO2012021211A3 (en) Cutting tool with unequal flute spacing
WO2011005059A3 (en) Multi-mode resonant filter
WO2011068714A3 (en) Dual tapered shaped abrasive particles
USD637882S1 (en) Saw
EP2035176A4 (en) A cutting insert and a tool where the insert has improved support surfaces.
EP1848837A4 (en) Improved glass stability, glass forming ability, and microstructural refinement
WO2008066795A3 (en) Wall-flow honeycomb filter with hexagonal channel symmetry
WO2007088213A3 (en) Oxide mixture
AU2003287373A1 (en) Humidifier with reverse osmosis filter
WO2007050569A3 (en) Polypeptide multilayer films and methods
USD627083S1 (en) Glass lite
WO2007120359A3 (en) Rotatable holder
EP2239230A4 (en) Burned composite metal oxide and process for producing the same
TW200702084A (en) Cutting insert
WO2007067435A3 (en) Poly(trimethylene terephthalate)/poly(alpha-hydroxy acid) bi-constituent filaments
EP2087505A4 (en) Electrodeless bulb, and electrodeless lighting system having the same
Sarkissian Defects and permutation branes in the Liouville field theory
WO2009040511A3 (en) Deadleg
EP2003083A4 (en) Escalator step and escalator with the same
EP4048875A4 (en) Low temperature nox adsorber with enhanced regeneration efficiency
WO2009024257A3 (en) Aerosol filter with locking mechanism
CA3272693A1 (en) Hybrid adsorbent granules and filters made with the granules
EM06302490002S (en) Mixers, industrial

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880014790.1

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2008747438

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2683133

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2010506666

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 6486/CHENP/2009

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20097025264

Country of ref document: KR

Kind code of ref document: A