BRPI0507627A - catalisador de limpeza de gás de exaustão com uma concentração de metal precioso axialmente variável e processos pra preparar o catalisador - Google Patents
catalisador de limpeza de gás de exaustão com uma concentração de metal precioso axialmente variável e processos pra preparar o catalisadorInfo
- Publication number
- BRPI0507627A BRPI0507627A BRPI0507627-7A BRPI0507627A BRPI0507627A BR PI0507627 A BRPI0507627 A BR PI0507627A BR PI0507627 A BRPI0507627 A BR PI0507627A BR PI0507627 A BRPI0507627 A BR PI0507627A
- Authority
- BR
- Brazil
- Prior art keywords
- catalyst
- exhaust gas
- precious metal
- gas cleaning
- processes
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 title abstract 5
- 238000004140 cleaning Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 239000010970 precious metal Substances 0.000 title abstract 2
- 238000011144 upstream manufacturing Methods 0.000 abstract 3
- 230000003197 catalytic effect Effects 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 230000007423 decrease Effects 0.000 abstract 1
Classifications
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- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
-
- 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
- B01J35/19—Catalysts containing parts with different compositions
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/024—Multiple impregnation or coating
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/024—Multiple impregnation or coating
- B01J37/0244—Coatings comprising several layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1023—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/014—Stoichiometric gasoline engines
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/464—Rhodium
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0203—Impregnation the impregnation liquid containing organic compounds
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0207—Pretreatment of the support
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- 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
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
-
- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/1234—Honeycomb, or with grain orientation or elongated elements in defined angular relationship in respective components [e.g., parallel, inter- secting, etc.]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
CATALISADOR DE LIMPEZA DE GáS DE EXAUSTãO COM UMA CONCENTRAçãO DE METAL PRECIOSO AXIALMENTE VARIáVEL E PROCESSOS PRA PREPARAR O CATALISADOR. A presente invenção refere-se a um catalisador de limpeza de gás de exaustão que compreende sobre um portador de favo, um revestimento catalítico. O referido portador de favo tem uma extremidade a montante e uma extremidade a jusante e diversos canais de fluxo que seguem da extremidade a montante para e extremidade a jusante. O revestimento catalítico compreende componentes de metal precioso cataliticamente ativos dos quais pelo menos um componente exibe um perfil de concentração ao longo do portador de favo, começando com uma baixa concentração na extremidade a montante que aumenta ao longo dos canais de fluxo até um valor e em seguida diminui novamente para a extremidade a jusante.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04003040 | 2004-02-11 | ||
EP04003040.5 | 2004-02-11 | ||
PCT/EP2005/000450 WO2005077497A1 (en) | 2004-02-11 | 2005-01-18 | Exhaust gas cleaning catalyst with an axially varying precious metal concentration and processes for making the catalyst |
Publications (2)
Publication Number | Publication Date |
---|---|
BRPI0507627A true BRPI0507627A (pt) | 2007-07-03 |
BRPI0507627B1 BRPI0507627B1 (pt) | 2015-03-17 |
Family
ID=34854549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0507627-7A BRPI0507627B1 (pt) | 2004-02-11 | 2005-01-18 | Catalisador de limpeza de gás de exaustão com uma concentração de metal precioso axialmente variável e processos pra preparar o catalisador |
Country Status (12)
Country | Link |
---|---|
US (1) | US7906454B2 (pt) |
EP (1) | EP1715940B1 (pt) |
JP (1) | JP4960709B2 (pt) |
KR (1) | KR101077814B1 (pt) |
CN (1) | CN100509119C (pt) |
AT (1) | ATE387254T1 (pt) |
BR (1) | BRPI0507627B1 (pt) |
CA (1) | CA2555506C (pt) |
DE (1) | DE602005005022T2 (pt) |
RU (1) | RU2363527C2 (pt) |
WO (1) | WO2005077497A1 (pt) |
ZA (1) | ZA200606614B (pt) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4506487B2 (ja) * | 2005-01-31 | 2010-07-21 | トヨタ自動車株式会社 | 排ガス浄化用触媒及びそれを用いた排ガス浄化制御装置 |
JP4838258B2 (ja) * | 2005-10-05 | 2011-12-14 | 株式会社キャタラー | 排ガス浄化用触媒 |
CN100443180C (zh) * | 2005-12-22 | 2008-12-17 | 中国石油化工股份有限公司 | 一种具有规整结构的催化剂及其制备方法 |
JP2007301526A (ja) * | 2006-05-15 | 2007-11-22 | Toyota Central Res & Dev Lab Inc | 排ガス浄化用触媒及びその製造方法 |
JP5037888B2 (ja) | 2006-09-26 | 2012-10-03 | 株式会社キャタラー | 排ガス浄化用触媒 |
EP2112339A1 (de) * | 2008-04-24 | 2009-10-28 | Umicore AG & Co. KG | Verfahren und Vorrichtung zur Reinigung von Abgasen eines Verbrennungsmotors |
US8246923B2 (en) * | 2009-05-18 | 2012-08-21 | Umicore Ag & Co. Kg | High Pd content diesel oxidation catalysts with improved hydrothermal durability |
US8557203B2 (en) * | 2009-11-03 | 2013-10-15 | Umicore Ag & Co. Kg | Architectural diesel oxidation catalyst for enhanced NO2 generator |
WO2012021556A2 (en) * | 2010-08-09 | 2012-02-16 | Cormetech, Inc. | Catalyst compositions and applications thereof |
KR101305182B1 (ko) | 2010-11-30 | 2013-09-12 | 현대자동차주식회사 | 귀금속을 활용한 고성능 촉매 |
DE102011100017A1 (de) * | 2011-04-29 | 2012-10-31 | Süd-Chemie AG | Verfahren zur Herstellung gezonter Katalysatoren |
JP2013169501A (ja) * | 2012-02-20 | 2013-09-02 | Mitsubishi Motors Corp | 排気浄化装置 |
US9051183B2 (en) * | 2012-08-24 | 2015-06-09 | Intelligent Energy Inc. | Hydrogen generator having reactant pellet with concentration gradient |
US9662636B2 (en) * | 2014-04-17 | 2017-05-30 | Basf Corporation | Zoned catalyst composites |
US9764286B2 (en) * | 2014-12-03 | 2017-09-19 | Ford Global Technologies, Llc | Zoned catalyst system for reducing N2O emissions |
AU2016226061B2 (en) * | 2015-03-05 | 2021-07-22 | Watt Fuel Cell Corp. | Afterburners including methods of making and operating |
DE102015212788A1 (de) | 2015-07-08 | 2017-01-12 | Volkswagen Aktiengesellschaft | Katalytisch aktives Partikelfilter |
GB201518784D0 (en) * | 2015-10-23 | 2015-12-09 | Johnson Matthey Plc | Catalysed monolith substrate for a diesel engine |
US10099212B2 (en) * | 2016-03-15 | 2018-10-16 | Cummins Emission Solutions Inc. | Hydrocarbon storage optimization and coking prevention on an oxidation catalyst |
US11123720B2 (en) * | 2018-05-18 | 2021-09-21 | Umicore Ag & Co. Kg | Hydrocarbon trap catalyst |
CN110732320B (zh) * | 2019-10-13 | 2022-04-08 | 苏州倍友环保科技有限公司 | 一种柴油机尾气氧化催化剂及其制备方法和应用 |
US20210213425A1 (en) * | 2020-01-13 | 2021-07-15 | Umicore Ag & Co. Kg | Three-way-catalyst |
US11224861B2 (en) | 2020-06-08 | 2022-01-18 | Umicore Ag & Co. Kg | Layered TWC |
CN113731421A (zh) * | 2021-09-29 | 2021-12-03 | 北京工业大学 | 一种co整体式催化剂的涂覆工艺及其制备方法 |
CN117299116B (zh) * | 2023-08-25 | 2024-04-09 | 中节能(山东)催化剂有限公司 | 一种节能降碳催化剂及制备方法 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5712820A (en) * | 1980-06-24 | 1982-01-22 | Toyota Motor Corp | Monolithic type catalyst structure for cleaning automobile exhaust |
US4330437A (en) * | 1980-11-05 | 1982-05-18 | Borden, Inc. | Supported silver catalyst and a process of preparing it |
US4417908A (en) * | 1982-02-22 | 1983-11-29 | Corning Glass Works | Honeycomb filter and method of making it |
US4420316A (en) * | 1982-02-22 | 1983-12-13 | Corning Glass Works | Filter apparatus and method of making it |
US5510086A (en) * | 1995-04-10 | 1996-04-23 | General Motors Corporation | Adcat exhaust treatment device |
US6087298A (en) * | 1996-05-14 | 2000-07-11 | Engelhard Corporation | Exhaust gas treatment system |
GB9615123D0 (en) * | 1996-07-18 | 1996-09-04 | Johnson Matthey Plc | Three-way conversion catalysts and methods for the preparation therof |
JPH11107744A (ja) * | 1997-10-07 | 1999-04-20 | Toyota Motor Corp | 排ガス浄化用触媒装置 |
KR20010033611A (ko) * | 1997-12-24 | 2001-04-25 | 스티븐 아이. 밀러 | 내연기관 동력의 차량용 촉매 전환기 시스템 |
CN1607036A (zh) * | 1998-04-28 | 2005-04-20 | 恩格尔哈德公司 | 涂布基质的方法及其制品 |
AU1520200A (en) * | 1998-11-13 | 2000-06-05 | Engelhard Corporation | Catalyst and method for reducing exhaust gas emissions |
US6375910B1 (en) * | 1999-04-02 | 2002-04-23 | Engelhard Corporation | Multi-zoned catalytic trap and methods of making and using the same |
EP1180063A2 (en) * | 1999-04-19 | 2002-02-20 | Engelhard Corporation | Catylyst composition comprising ceria and a platinum group metal |
DE60027688T3 (de) * | 1999-08-30 | 2012-03-29 | Ngk Insulators, Ltd. | Honigwabenstruktur mit gewellter wandung und verfahren zu deren herstellung |
US6727097B2 (en) * | 2000-06-15 | 2004-04-27 | Engelhard Corporation | Method and apparatus for accelerated catalyst poisoning and deactivation |
EP1287886A1 (de) * | 2001-08-09 | 2003-03-05 | OMG AG & Co. KG | Katalysator für die Reinigung der Abgase eines Verbrennungsmotors |
US7276212B2 (en) * | 2001-10-01 | 2007-10-02 | Engelhard Corporation | Exhaust articles for internal combustion engines |
EP1316354A1 (de) * | 2001-11-30 | 2003-06-04 | OMG AG & Co. KG | Katalysator zur Verminderung der Stickoxide im Abgas von Magermotoren |
JP2003206733A (ja) * | 2002-01-16 | 2003-07-25 | Hitachi Ltd | 内燃機関用排気ガス浄化装置 |
US20040001781A1 (en) * | 2002-06-27 | 2004-01-01 | Engelhard Corporation | Multi-zone catalytic converter |
-
2005
- 2005-01-18 KR KR1020067016296A patent/KR101077814B1/ko active IP Right Grant
- 2005-01-18 JP JP2006552485A patent/JP4960709B2/ja active Active
- 2005-01-18 WO PCT/EP2005/000450 patent/WO2005077497A1/en active IP Right Grant
- 2005-01-18 EP EP05701019A patent/EP1715940B1/en active Active
- 2005-01-18 BR BRPI0507627-7A patent/BRPI0507627B1/pt not_active IP Right Cessation
- 2005-01-18 US US10/588,943 patent/US7906454B2/en active Active
- 2005-01-18 CA CA2555506A patent/CA2555506C/en not_active Expired - Fee Related
- 2005-01-18 RU RU2006132467/15A patent/RU2363527C2/ru not_active IP Right Cessation
- 2005-01-18 AT AT05701019T patent/ATE387254T1/de not_active IP Right Cessation
- 2005-01-18 CN CNB2005800109179A patent/CN100509119C/zh active Active
- 2005-01-18 DE DE602005005022T patent/DE602005005022T2/de active Active
-
2006
- 2006-08-08 ZA ZA2006/06614A patent/ZA200606614B/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE602005005022T2 (de) | 2009-03-12 |
CA2555506A1 (en) | 2005-08-25 |
JP4960709B2 (ja) | 2012-06-27 |
DE602005005022D1 (de) | 2008-04-10 |
JP2007521953A (ja) | 2007-08-09 |
BRPI0507627B1 (pt) | 2015-03-17 |
WO2005077497A1 (en) | 2005-08-25 |
RU2006132467A (ru) | 2008-03-20 |
KR101077814B1 (ko) | 2011-10-31 |
RU2363527C2 (ru) | 2009-08-10 |
CN100509119C (zh) | 2009-07-08 |
ATE387254T1 (de) | 2008-03-15 |
CN1942234A (zh) | 2007-04-04 |
EP1715940B1 (en) | 2008-02-27 |
US7906454B2 (en) | 2011-03-15 |
CA2555506C (en) | 2012-05-29 |
ZA200606614B (en) | 2008-01-08 |
KR20060135754A (ko) | 2006-12-29 |
US20070264518A1 (en) | 2007-11-15 |
EP1715940A1 (en) | 2006-11-02 |
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