US20050000211A1 - Method for regenerating an exhaust gas filtering device for diesel engine and device therefor - Google Patents

Method for regenerating an exhaust gas filtering device for diesel engine and device therefor Download PDF

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Publication number
US20050000211A1
US20050000211A1 US10/487,544 US48754404A US2005000211A1 US 20050000211 A1 US20050000211 A1 US 20050000211A1 US 48754404 A US48754404 A US 48754404A US 2005000211 A1 US2005000211 A1 US 2005000211A1
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US
United States
Prior art keywords
diesel fuel
injection
filtration
combustion
exhaust gases
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.)
Abandoned
Application number
US10/487,544
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English (en)
Inventor
Jea-Claude Fayard
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CRMT
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20050000211A1 publication Critical patent/US20050000211A1/en
Assigned to C.R.M.T. reassignment C.R.M.T. PARTIAL ASSIGNMENT(50% RIGHTS) Assignors: FAYARD, JEAN-CLAUDE
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features having two or more purifying devices arranged in parallel
    • F01N13/017—Exhaust or silencing apparatus characterised by constructional features having two or more purifying devices arranged in parallel the purifying devices are arranged in a single housing
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0231—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 using means for regenerating the filters, e.g. by burning trapped particles using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—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 using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F01N3/0253—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 using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
    • 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
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
    • 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air

Definitions

  • this method also consists in:
  • the device also includes at least one temperature sensor, placed inside said enclosure, used to measure the temperature ⁇ m in its interior.
  • the capacity of the secondary reservoir 34 is determined so that it corresponds to the maximum volume of diesel fuel necessary for the regeneration. In this way, excessive consumption of diesel fuel cannot take place.
  • the frequency of the regeneration cycles is furthermore limited by the time taken to fill the second very reservoir 34 , which also makes it possible to avoid consequent extra fuel consumption.
  • the filtration means is therefore freed from deposits and recovers its full filtration capacity.
  • a third mode of operation consists in simultaneously measuring the temperature and the pressure in the catalyst production means, using the temperature sensor 24 and the pressure sensor 26 .
  • the measured pressure value P m reflects the degree of obstruction of the filtration means by the particles. Specifically, if the filtration means is clogged, it is more difficult for the exhaust gases to pass through, so that they exert a backpressure. Measuring the pressure P m therefore corresponds to the best way of monitoring the clogging of the filtration means.
  • the electronic control module compares the measured value P m with a reference value P r , corresponding to the maximum acceptable degree of obstruction of the filtration means.
  • a filtration device used with an industrial vehicle engine is presented below as a nonlimiting example, namely the supercharged Renault VI 620-45 engine with a 10 liter cylinder capacity and a power of 190 kw. This engine is used in city buses.
  • the filtration device is composed of:
  • the electronic module was set so that the post-injection is initiated as soon as the backpressure reaches 120 mb and the temperature of the gases is more than 300° C.
  • the value of the backpressure measured after each regeneration process of the filtration device is thus 50 mb, which corresponds to the backpressure value measured on a new filtration device.
  • the regeneration of the device is therefore complete.
  • the regeneration method according to the invention, and the associated filtration device are therefore particularly suitable for processing the exhaust gases of municipal transport vehicles.
  • the gases produced by these vehicles are generally at a temperature below that necessary in order to allow regeneration of conventional filtration devices, which leads to clogging of these devices and therefore their rapid deterioration owing to vigorous combustion reactions.
  • the results obtained with the present technique make it possible to envisage a minimum lifetime of 100,000 km for the filtration device on vehicles of this type.
  • the filtration device according to the invention may not include new technical elements
  • the inventors have succeeded in combining and adapting various existing techniques in order to enhance their effects and obtain a device which has a very high efficiency, in order to combat the emission of polluting particles produced by diesel engines and, furthermore, in order to obtain excellent results in terms of the regeneration of filters, even in the case of vehicles whose engine speeds do not make it possible to obtain exhaust gases which are at high temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
US10/487,544 2001-08-28 2002-08-07 Method for regenerating an exhaust gas filtering device for diesel engine and device therefor Abandoned US20050000211A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0111180 2001-08-28
FR0111180A FR2829180B1 (fr) 2001-08-28 2001-08-28 Procede de regeneration d'un dispositif de filtration des gaz d'echappement pour un moteur diesel et dispositif de mise en oeuvre
PCT/FR2002/002819 WO2003018971A1 (fr) 2001-08-28 2002-08-07 Procede de regeneration d'un dispositif de filtration des gaz d'echappement pour moteur diesel et dispositif de mise en oeuvre

Publications (1)

Publication Number Publication Date
US20050000211A1 true US20050000211A1 (en) 2005-01-06

Family

ID=8866779

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/487,544 Abandoned US20050000211A1 (en) 2001-08-28 2002-08-07 Method for regenerating an exhaust gas filtering device for diesel engine and device therefor

Country Status (7)

Country Link
US (1) US20050000211A1 (de)
EP (1) EP1421267B1 (de)
AT (1) ATE323219T1 (de)
CA (1) CA2458983C (de)
DE (1) DE60210631T2 (de)
FR (1) FR2829180B1 (de)
WO (1) WO2003018971A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060101810A1 (en) * 2004-11-15 2006-05-18 Angelo Theodore G System for dispensing fuel into an exhaust system of a diesel engine
US20060218902A1 (en) * 2005-03-31 2006-10-05 Solar Turbines Incorporated Burner assembly for particulate trap regeneration
US20070056264A1 (en) * 2003-06-12 2007-03-15 Donaldson Company, Inc. Method of dispensing fuel into transient flow of an exhaust system
US20070157818A1 (en) * 2004-06-23 2007-07-12 Peugeot Citroen Automobiles Sa System for evaluating the charge state of an exhaust line depollution means
US20090217648A1 (en) * 2008-02-29 2009-09-03 Patrick David Tepesch Exhaust treatment device having a reactive compound and conditioning the device via endothermic reaction
US20140109558A1 (en) * 2012-10-24 2014-04-24 Electro-Motive Diesel, Inc. After-treatment device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10316799A1 (de) * 2003-04-11 2004-10-28 Man Nutzfahrzeuge Ag Kombinierte Abgasnachbehandlungs-/Schalldämpfungsvorrichtung im Abgasstrang einer Brennkraftmaschine
CN108868974A (zh) * 2018-09-03 2018-11-23 王随朝 柴油发电机尾气处理装置

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462812A (en) * 1982-12-08 1984-07-31 General Motors Corporation Ceramic monolith particulate trap including filter support
US5193340A (en) * 1990-05-10 1993-03-16 Nissan Motor Co., Ltd. Exhaust gas purifying system for internal combustion engine
US5207990A (en) * 1990-06-01 1993-05-04 Nissan Motor Co., Ltd. Exhaust gas purifying device for internal combustion engine
US5381659A (en) * 1993-04-06 1995-01-17 Hughes Aircraft Company Engine exhaust reburner system and method
US5711149A (en) * 1995-05-18 1998-01-27 Toyota Jidosha Kabushiki Kaisha Device for purifying the exhaust gas of a diesel engine
US6021639A (en) * 1995-06-28 2000-02-08 Mitsubishi Heavy Industries, Ltd. Black smoke eliminating device for internal combustion engine and exhaust gas cleaning system including the device
US6273120B1 (en) * 1998-11-12 2001-08-14 Siemens Aktiengesellschaft Device for introducing a liquid reducing agent into an exhaust gas purification system
US6304815B1 (en) * 2000-03-29 2001-10-16 Ford Global Technologies, Inc. Method for controlling an exhaust gas temperature of an engine for improved performance of exhaust aftertreatment systems
US6405528B1 (en) * 2000-11-20 2002-06-18 Ford Global Technologies, Inc. Method for determining load on particulate filter for engine exhaust, including estimation of ash content
US6568178B2 (en) * 2000-03-28 2003-05-27 Toyota Jidosha Kabushiki Kaisha Device for purifying the exhaust gas of an internal combustion engine
US6594990B2 (en) * 2000-11-03 2003-07-22 Ford Global Technologies, Llc Method for regenerating a diesel particulate filter
US6598387B2 (en) * 2000-12-21 2003-07-29 Ford Global Technologies, Llc Reduction of exhaust smoke emissions following extended diesel engine idling
US6615580B1 (en) * 1999-06-23 2003-09-09 Southwest Research Institute Integrated system for controlling diesel engine emissions
US6758037B2 (en) * 2001-09-07 2004-07-06 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Exhaust emission control device of engine
US6843054B2 (en) * 2003-01-16 2005-01-18 Arvin Technologies, Inc. Method and apparatus for removing NOx and soot from engine exhaust gas
US6874316B2 (en) * 2002-04-25 2005-04-05 Toyota Jidosha Kabushiki Kaisha Device for purifying the exhaust gas of an internal combustion engine
US7021047B2 (en) * 2004-07-23 2006-04-04 General Motors Corporation Diesel exhaust aftertreatment device regeneration system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3028110B2 (ja) * 1993-10-21 2000-04-04 日野自動車株式会社 エンジンの排ガス浄化装置
JP3572439B2 (ja) * 1998-05-21 2004-10-06 日産自動車株式会社 ディーゼルエンジンの排気浄化装置
DE69903066T2 (de) * 1998-12-05 2003-03-13 Johnson Matthey Public Ltd., Co. Verbesserungen bei abgaspartikelkontrolle
JP3904768B2 (ja) * 1999-09-06 2007-04-11 日野自動車株式会社 ディーゼルエンジン排気ガス用パティキュレートフィルタのクリーニング及び再生装置

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462812A (en) * 1982-12-08 1984-07-31 General Motors Corporation Ceramic monolith particulate trap including filter support
US5193340A (en) * 1990-05-10 1993-03-16 Nissan Motor Co., Ltd. Exhaust gas purifying system for internal combustion engine
US5207990A (en) * 1990-06-01 1993-05-04 Nissan Motor Co., Ltd. Exhaust gas purifying device for internal combustion engine
US5381659A (en) * 1993-04-06 1995-01-17 Hughes Aircraft Company Engine exhaust reburner system and method
US5711149A (en) * 1995-05-18 1998-01-27 Toyota Jidosha Kabushiki Kaisha Device for purifying the exhaust gas of a diesel engine
US6021639A (en) * 1995-06-28 2000-02-08 Mitsubishi Heavy Industries, Ltd. Black smoke eliminating device for internal combustion engine and exhaust gas cleaning system including the device
US6273120B1 (en) * 1998-11-12 2001-08-14 Siemens Aktiengesellschaft Device for introducing a liquid reducing agent into an exhaust gas purification system
US6615580B1 (en) * 1999-06-23 2003-09-09 Southwest Research Institute Integrated system for controlling diesel engine emissions
US6568178B2 (en) * 2000-03-28 2003-05-27 Toyota Jidosha Kabushiki Kaisha Device for purifying the exhaust gas of an internal combustion engine
US6304815B1 (en) * 2000-03-29 2001-10-16 Ford Global Technologies, Inc. Method for controlling an exhaust gas temperature of an engine for improved performance of exhaust aftertreatment systems
US6594990B2 (en) * 2000-11-03 2003-07-22 Ford Global Technologies, Llc Method for regenerating a diesel particulate filter
US6405528B1 (en) * 2000-11-20 2002-06-18 Ford Global Technologies, Inc. Method for determining load on particulate filter for engine exhaust, including estimation of ash content
US6598387B2 (en) * 2000-12-21 2003-07-29 Ford Global Technologies, Llc Reduction of exhaust smoke emissions following extended diesel engine idling
US6758037B2 (en) * 2001-09-07 2004-07-06 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Exhaust emission control device of engine
US6874316B2 (en) * 2002-04-25 2005-04-05 Toyota Jidosha Kabushiki Kaisha Device for purifying the exhaust gas of an internal combustion engine
US6843054B2 (en) * 2003-01-16 2005-01-18 Arvin Technologies, Inc. Method and apparatus for removing NOx and soot from engine exhaust gas
US7021047B2 (en) * 2004-07-23 2006-04-04 General Motors Corporation Diesel exhaust aftertreatment device regeneration system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070056264A1 (en) * 2003-06-12 2007-03-15 Donaldson Company, Inc. Method of dispensing fuel into transient flow of an exhaust system
US7337607B2 (en) 2003-06-12 2008-03-04 Donaldson Company, Inc. Method of dispensing fuel into transient flow of an exhaust system
US20070157818A1 (en) * 2004-06-23 2007-07-12 Peugeot Citroen Automobiles Sa System for evaluating the charge state of an exhaust line depollution means
US7824481B2 (en) * 2004-06-23 2010-11-02 Peugeot Citroen Automobiles Sa System for evaluating the charge state of an exhaust line depollution means
US20060101810A1 (en) * 2004-11-15 2006-05-18 Angelo Theodore G System for dispensing fuel into an exhaust system of a diesel engine
US20060218902A1 (en) * 2005-03-31 2006-10-05 Solar Turbines Incorporated Burner assembly for particulate trap regeneration
US7980069B2 (en) 2005-03-31 2011-07-19 Solar Turbines Inc. Burner assembly for particulate trap regeneration
US20090217648A1 (en) * 2008-02-29 2009-09-03 Patrick David Tepesch Exhaust treatment device having a reactive compound and conditioning the device via endothermic reaction
US8091337B2 (en) 2008-02-29 2012-01-10 Corning Incorporated Exhaust treatment device having a reactive compound and conditioning the device via endothermic reaction
US20140109558A1 (en) * 2012-10-24 2014-04-24 Electro-Motive Diesel, Inc. After-treatment device
US9010098B2 (en) * 2012-10-24 2015-04-21 Electro-Motive Diesel, Inc. After-treatment device

Also Published As

Publication number Publication date
WO2003018971A1 (fr) 2003-03-06
DE60210631T2 (de) 2007-04-05
CA2458983A1 (fr) 2003-03-06
FR2829180A1 (fr) 2003-03-07
CA2458983C (fr) 2012-07-10
DE60210631D1 (de) 2006-05-24
EP1421267A1 (de) 2004-05-26
FR2829180B1 (fr) 2005-10-28
EP1421267B1 (de) 2006-04-12
ATE323219T1 (de) 2006-04-15

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STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: C.R.M.T., FRANCE

Free format text: PARTIAL ASSIGNMENT(50% RIGHTS);ASSIGNOR:FAYARD, JEAN-CLAUDE;REEL/FRAME:020572/0741

Effective date: 20071115