GB2344771B8 - Method for operating and checking of a NOx storagereduction catalytic converter for a lean internal combustion engine - Google Patents

Method for operating and checking of a NOx storagereduction catalytic converter for a lean internal combustion engine

Info

Publication number
GB2344771B8
GB2344771B8 GB9925994A GB9925994A GB2344771B8 GB 2344771 B8 GB2344771 B8 GB 2344771B8 GB 9925994 A GB9925994 A GB 9925994A GB 9925994 A GB9925994 A GB 9925994A GB 2344771 B8 GB2344771 B8 GB 2344771B8
Authority
GB
United Kingdom
Prior art keywords
catalytic converter
nox
combustion engine
internal combustion
ageing
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.)
Expired - Fee Related
Application number
GB9925994A
Other versions
GB2344771B (en
GB9925994D0 (en
GB2344771A8 (en
GB2344771A (en
Inventor
Hong Zhang
Corinna Pfleger
Wolfgang Ludwig
Dirk Voigtlaender
Walter Boegner
Christof Schoen
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB9925994D0 publication Critical patent/GB9925994D0/en
Publication of GB2344771A publication Critical patent/GB2344771A/en
Publication of GB2344771B publication Critical patent/GB2344771B/en
Application granted granted Critical
Publication of GB2344771A8 publication Critical patent/GB2344771A8/en
Publication of GB2344771B8 publication Critical patent/GB2344771B8/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • 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
    • B01D53/9495—Controlling the catalytic process
    • 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
    • F02D41/028—Desulfurisation of NOx traps or adsorbent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
    • F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry
    • 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
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/03—Monitoring or diagnosing the deterioration of exhaust systems of sorbing activity of adsorbents or absorbents
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/04—Sulfur or sulfur oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller
    • 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
    • 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
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The ageing status of the NOx storage catalytic converter is expressed by means of an ageing factor (AF) which describes the current storage capacity of the NOx storage catalytic converter after it has been reduced by ageing influences. The ageing factor (AF) is compared in succession with multiple threshold values (SW1-SW3) of differing levels, where the level of the threshold values (SW1-SW3) decreases as the flow distance of the NOx storage catalytic converter increases. In the event of certain threshold values (SW1 - SW3) not being reached, different operational strategies are initiated for the NOx storage catalytic converter and/or the internal combustion engine, e.g: a sulphur purge.
GB9925994A 1998-11-09 1999-11-04 Method for operating and checking of a NOx storagereduction catalytic converter for a lean internal combustion engine Expired - Fee Related GB2344771B8 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19851564A DE19851564C2 (en) 1998-11-09 1998-11-09 Method for operating and checking a NOx storage reduction catalytic converter of a lean-burn internal combustion engine

Publications (5)

Publication Number Publication Date
GB9925994D0 GB9925994D0 (en) 2000-01-12
GB2344771A GB2344771A (en) 2000-06-21
GB2344771B GB2344771B (en) 2002-09-18
GB2344771A8 GB2344771A8 (en) 2014-01-29
GB2344771B8 true GB2344771B8 (en) 2014-01-29

Family

ID=7887143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9925994A Expired - Fee Related GB2344771B8 (en) 1998-11-09 1999-11-04 Method for operating and checking of a NOx storagereduction catalytic converter for a lean internal combustion engine

Country Status (3)

Country Link
DE (1) DE19851564C2 (en)
FR (1) FR2785640B1 (en)
GB (1) GB2344771B8 (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19929292A1 (en) * 1999-06-25 2000-12-28 Volkswagen Ag Control of the operating condition of motor vehicle internal combustion engine dependent upon the catalyst cell temperature uses set detected threshold levels to vary engine control parameters
DE19942270A1 (en) 1999-09-04 2001-03-15 Bosch Gmbh Robert Method for operating an internal combustion engine
DE10023080B4 (en) * 2000-05-11 2009-10-22 Volkswagen Ag Method and device for monitoring a storage capacity of a NOx storage catalytic converter
DE10023791B4 (en) * 2000-05-15 2011-06-01 Volkswagen Ag Method and device for controlling an exhaust gas purification system
JP4380902B2 (en) * 2000-09-22 2009-12-09 株式会社デンソー Deterioration detection device for exhaust gas purification catalyst
DE10051012A1 (en) * 2000-10-14 2002-04-18 Bayerische Motoren Werke Ag Process for diagnosing the storage properties of a nitrogen oxides storage catalyst arranged in the exhaust gas pipe of an I.C. engine comprises determining an actual storage time period
DE10053629A1 (en) * 2000-10-28 2002-05-02 Bayerische Motoren Werke Ag Control method for an internal combustion engine with an exhaust gas catalytic converter
JP3558036B2 (en) * 2000-12-21 2004-08-25 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
JP2002364415A (en) * 2001-06-07 2002-12-18 Mazda Motor Corp Exhaust emission control device for engine
US6694244B2 (en) 2001-06-19 2004-02-17 Ford Global Technologies, Llc Method for quantifying oxygen stored in a vehicle emission control device
US6502387B1 (en) * 2001-06-19 2003-01-07 Ford Global Technologies, Inc. Method and system for controlling storage and release of exhaust gas constituents in an emission control device
US6629409B2 (en) 2001-06-20 2003-10-07 Ford Global Technologies, Llc System and method for determining set point location for oxidant-based engine air/fuel control strategy
US6993899B2 (en) 2001-06-20 2006-02-07 Ford Global Technologies, Llc System and method for controlling catalyst storage capacity
US6453662B1 (en) 2001-06-20 2002-09-24 Ford Global Technologies, Inc. System and method for estimating oxidant storage of a catalyst
US6453661B1 (en) 2001-06-20 2002-09-24 Ford Global Technologies, Inc. System and method for determining target oxygen storage in an automotive catalyst
US6497093B1 (en) 2001-06-20 2002-12-24 Ford Global Technologies, Inc. System and method for adjusting air-fuel ratio
LU90795B1 (en) * 2001-06-27 2002-12-30 Delphi Tech Inc Nox release index
DE10156476B4 (en) * 2001-11-16 2012-10-31 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Method for detecting the progressive sulfurization of a NOx storage catalytic converter
DE10216278B4 (en) * 2002-04-12 2005-05-04 Siemens Ag Method for determining a NOx concentration
DE10216260B4 (en) * 2002-04-12 2005-04-21 Siemens Ag Method for operating an internal combustion engine
DE10221568A1 (en) * 2002-05-08 2003-12-04 Volkswagen Ag Method for controlling a NO¶x¶ storage catalytic converter
DE10226873B4 (en) * 2002-06-12 2012-05-31 Volkswagen Ag Method for controlling the mode selection of an internal combustion engine
DE10237949B4 (en) * 2002-08-20 2013-11-07 Volkswagen Ag Method for operating a direct-injection internal combustion engine
DE10243343B4 (en) * 2002-09-18 2008-12-11 Continental Automotive Gmbh Method for evaluating a three-way catalyst
DE10249610B4 (en) * 2002-10-18 2010-10-07 Volkswagen Ag Method and device for controlling a NOx storage catalytic converter
DE10333337B4 (en) * 2003-06-30 2010-09-16 Volkswagen Ag Method and device for diagnosing a catalyst system
DE10337902A1 (en) * 2003-08-18 2005-03-24 Audi Ag Method of operating an internal combustion engine of motor vehicle, involves determining average nitrogen oxide over predetermined period from engine control unit as a function of two performance requirements exceeding a threshold
JP4349119B2 (en) 2003-12-19 2009-10-21 いすゞ自動車株式会社 Exhaust gas purification method and exhaust gas purification system
JP4066954B2 (en) * 2004-01-15 2008-03-26 株式会社デンソー Fuel injection device for internal combustion engine
JP4572709B2 (en) * 2005-03-18 2010-11-04 トヨタ自動車株式会社 Exhaust gas purification system for internal combustion engine
DE102007044937B4 (en) * 2007-09-20 2010-03-25 Continental Automotive Gmbh Method and device for operating an internal combustion engine
DE102008025520B4 (en) * 2008-05-28 2011-06-09 Ford Global Technologies, LLC, Dearborn A method for operating an exhaust aftertreatment device, and exhaust aftertreatment device
DE102014209972B4 (en) 2013-07-05 2024-03-21 Ford Global Technologies, Llc Method and device for evaluating the aging condition of a NOx storage catalytic converter
DE102016209358B4 (en) * 2016-05-31 2018-10-18 Continental Automotive Gmbh Method, apparatus for monitoring a nitrogen oxide trap, computer program and computer program product
JP6544388B2 (en) * 2017-06-23 2019-07-17 トヨタ自動車株式会社 Exhaust purification system for internal combustion engine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5471836A (en) * 1991-10-14 1995-12-05 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
DE4140618A1 (en) * 1991-12-10 1993-06-17 Bosch Gmbh Robert METHOD AND DEVICE FOR DETERMINING THE CONVERSIBILITY OF A CATALYST
JP3266699B2 (en) * 1993-06-22 2002-03-18 株式会社日立製作所 Catalyst evaluation method, catalyst efficiency control method, and NOx purification catalyst evaluation apparatus
DE19517168B4 (en) * 1994-05-10 2004-06-24 Mitsubishi Jidosha Kogyo K.K. Device and method for controlling an internal combustion engine
DE19543219C1 (en) * 1995-11-20 1996-12-05 Daimler Benz Ag Diesel engine operating method
US5704339A (en) * 1996-04-26 1998-01-06 Ford Global Technologies, Inc. method and apparatus for improving vehicle fuel economy
DE19629163C1 (en) * 1996-07-19 1997-10-09 Daimler Benz Ag Diesel engine operation to suppress nitrogen oxides emission
US5771685A (en) * 1996-10-16 1998-06-30 Ford Global Technologies, Inc. Method for monitoring the performance of a NOx trap
US5743084A (en) * 1996-10-16 1998-04-28 Ford Global Technologies, Inc. Method for monitoring the performance of a nox trap
DE19705335C1 (en) * 1997-02-12 1998-09-17 Siemens Ag Process for the regeneration of a storage catalytic converter
DE19800665C1 (en) * 1998-01-10 1999-07-01 Degussa Method for operating a nitrogen oxide storage catalytic converter
DE19816175A1 (en) * 1998-04-14 1999-10-21 Degussa Procedure for checking the functionality of a nitrogen oxide storage catalytic converter
DE19823921A1 (en) * 1998-05-28 1999-12-02 Siemens Ag Process for checking the efficiency of a NOx storage catalytic converter
US6244046B1 (en) * 1998-07-17 2001-06-12 Denso Corporation Engine exhaust purification system and method having NOx occluding and reducing catalyst

Also Published As

Publication number Publication date
FR2785640B1 (en) 2005-04-15
GB2344771B (en) 2002-09-18
FR2785640A1 (en) 2000-05-12
GB9925994D0 (en) 2000-01-12
DE19851564A1 (en) 2000-05-11
GB2344771A8 (en) 2014-01-29
DE19851564C2 (en) 2000-08-24
GB2344771A (en) 2000-06-21

Similar Documents

Publication Publication Date Title
GB2344771B8 (en) Method for operating and checking of a NOx storagereduction catalytic converter for a lean internal combustion engine
EP1519015B1 (en) Exhaust gas purifying system for internal combustion engine
US7134273B2 (en) Exhaust emission control and diagnostics
US9115660B2 (en) Exhaust purifying system for internal combustion engine
KR101764041B1 (en) Control device of internal combustion engine
EP1134368A3 (en) Method and system for reducing NOx tailpipe emissions of a lean-burn internation combustion engine
WO2008155631A3 (en) Method for regenerating a lnt
DE602005003956D1 (en) SYSTEM FOR SUPPORTING THE REGENERATION OF DETOXIFICANTS
WO2008155638A3 (en) Strategy for scheduling lnt regeneration
CN105317511A (en) Exhaust gas purification apparatus for an internal combustion engine
EP1384866A4 (en) Exhaust gas cleaner for internal combustion engine
CN104314651A (en) Aging correction method and correction device for ternary catalyst
CN106523087B (en) Control method for improving nitrogen oxide purification performance
JP2009138604A (en) Catalyst deterioration diagnosis device for internal combustion engine
KR20160149152A (en) Method for operating a internal combustion engine and control device for implementing said method
US10746115B2 (en) Methods and systems for an exhaust gas treatment arrangement
JP2009257243A (en) Exhaust emission control device for internal combustion engine
CN104929736B (en) The control method of the vehicle-mounted Catalyst Regeneration of combustion gas
WO2003016900A3 (en) Method and system for determining the type of fuel used to power a vehicle
US10815850B2 (en) Method for catalyst purge control based on engine temperature and vehicle using the same
US20120102930A1 (en) System for desulfurizing oxidation catalyst and method thereof
KR101592746B1 (en) THE REDUCTION METHOD OF NOx AND SOx FOR LNT SYSTEM EXPANDED OPERATING TEMPERATURE AREA
WO2006005868A3 (en) System for evaluating regeneration of pollution management means integrated in a motor vehicle engine exhaust line
EP1491737A4 (en) METHOD OF DECIDING ON CATALYST DETERIORATION AND MEANS FOR DECIDING ON CATALYST DETERIORATION IN NOx PURGING SYSTEM
CN1271319C (en) Method and apparatus for desulfurizing pre-catalyst

Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20110519 AND 20110525

S117 Correction of errors in patents and applications (sect. 117/patents act 1977)

Free format text: REQUEST FILED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 13 NOVEMBER 2012

S13A Application for inventor to be mentioned (section 13(1)/patents act 1977)

Free format text: APPLICATION FILED; REFERENCE UNDER RULE 10(2) BY DAIMLER AG AND CONTINENTAL AUTOMOTIVE GMBH FILED ON 14 JUNE 2013

S117 Correction of errors in patents and applications (sect. 117/patents act 1977)

Free format text: REQUEST NOT PROCEEDED WITH; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 13 NOVEMBER 2012 NOT ALLOWED ON 07 AUGUST 2013

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20131114 AND 20131120

S13A Application for inventor to be mentioned (section 13(1)/patents act 1977)

Free format text: APPLICATION ALLOWED; IN A DECISION OF THE COMPTROLLER DATED 28 NOVEMBER 2013, THE APPLICATION FILED UNDER RULE 10(2) WAS ALLOWED. THE COMPTROLLER FOUND THAT WALTER BOEGNER, CHRISTOF SCHOEN AND DIRK VOIGTLAENDER SHOULD BE MENTIONED AS INVENTORS AND DIRECTED THAT AN ADDENDUM SLIP MENTIONING THEM AS SUCH BE PREPARED FOR BOTH THE PUBLISHED PATENT APPLICATION AND GRANTED PATENT FOR THE INVENTION.

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20171104