GB1399137A - Production of reducing gases - Google Patents
Production of reducing gasesInfo
- Publication number
- GB1399137A GB1399137A GB3334172A GB3334172A GB1399137A GB 1399137 A GB1399137 A GB 1399137A GB 3334172 A GB3334172 A GB 3334172A GB 3334172 A GB3334172 A GB 3334172A GB 1399137 A GB1399137 A GB 1399137A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- air
- catalyst
- oxygen
- preheated
- 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
Links
- 239000007789 gas Substances 0.000 title abstract 7
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000003054 catalyst Substances 0.000 abstract 4
- 229930195733 hydrocarbon Natural products 0.000 abstract 4
- 150000002430 hydrocarbons Chemical class 0.000 abstract 4
- 239000004215 Carbon black (E152) Substances 0.000 abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 3
- 239000001301 oxygen Substances 0.000 abstract 3
- 229910052760 oxygen Inorganic materials 0.000 abstract 3
- 239000000376 reactant Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052770 Uranium Inorganic materials 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910000323 aluminium silicate Inorganic materials 0.000 abstract 1
- 229910052788 barium Inorganic materials 0.000 abstract 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000000571 coke Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000003345 natural gas Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- 238000002407 reforming Methods 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
- C01B3/386—Catalytic partial combustion
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/025—Processes for making hydrogen or synthesis gas containing a partial oxidation step
- C01B2203/0261—Processes for making hydrogen or synthesis gas containing a partial oxidation step containing a catalytic partial oxidation step [CPO]
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
- C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
- C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1047—Group VIII metal catalysts
- C01B2203/1052—Nickel or cobalt catalysts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1082—Composition of support materials
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1094—Promotors or activators
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1235—Hydrocarbons
- C01B2203/1241—Natural gas or methane
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1276—Mixing of different feed components
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/16—Controlling the process
- C01B2203/1628—Controlling the pressure
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/16—Controlling the process
- C01B2203/169—Controlling the feed
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Catalysts (AREA)
- Manufacture Of Iron (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3334172A GB1399137A (en) | 1972-07-17 | 1972-07-17 | Production of reducing gases |
| DE19732352438 DE2352438A1 (de) | 1972-07-17 | 1973-10-19 | Verfahren zur katalytischen teiloxydation von kohlenwasserstoffen |
| AU61690/73A AU485072B2 (en) | 1972-07-17 | 1973-10-23 | Improvements relating tothe production of reducing gases |
| FR7338697A FR2249030B1 (enrdf_load_stackoverflow) | 1972-07-17 | 1973-10-30 | |
| JP48124906A JPS5075590A (enrdf_load_stackoverflow) | 1972-07-17 | 1973-11-06 | |
| LU68795A LU68795A1 (enrdf_load_stackoverflow) | 1972-07-17 | 1973-11-13 |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3334172A GB1399137A (en) | 1972-07-17 | 1972-07-17 | Production of reducing gases |
| DE19732352438 DE2352438A1 (de) | 1972-07-17 | 1973-10-19 | Verfahren zur katalytischen teiloxydation von kohlenwasserstoffen |
| AU61690/73A AU485072B2 (en) | 1972-07-17 | 1973-10-23 | Improvements relating tothe production of reducing gases |
| FR7338697A FR2249030B1 (enrdf_load_stackoverflow) | 1972-07-17 | 1973-10-30 | |
| JP48124906A JPS5075590A (enrdf_load_stackoverflow) | 1972-07-17 | 1973-11-06 | |
| LU68795A LU68795A1 (enrdf_load_stackoverflow) | 1972-07-17 | 1973-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1399137A true GB1399137A (en) | 1975-06-25 |
Family
ID=27542782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3334172A Expired GB1399137A (en) | 1972-07-17 | 1972-07-17 | Production of reducing gases |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5075590A (enrdf_load_stackoverflow) |
| AU (1) | AU485072B2 (enrdf_load_stackoverflow) |
| DE (1) | DE2352438A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2249030B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1399137A (enrdf_load_stackoverflow) |
| LU (1) | LU68795A1 (enrdf_load_stackoverflow) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758375A (en) * | 1984-05-02 | 1988-07-19 | The British Petroleum Company P.L.C. | Conversion process |
| US4767569A (en) * | 1984-04-05 | 1988-08-30 | The British Petroleum Company P.L.C. | Process for producing synthesis gas by partial combustion of hydrocarbons |
| US5149464A (en) * | 1989-06-30 | 1992-09-22 | Gas Research Institute | Catalytic gas conversion method |
| WO2002006154A1 (fr) * | 2000-07-19 | 2002-01-24 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procede et dispositif de production d'un melange gazeux contenant de l'hydrogene et du co par oxydation etagee d'un hydrocarbure |
| FR2811975A1 (fr) * | 2000-07-19 | 2002-01-25 | Air Liquide | Procede et dispositif de production d'un melange gazeux contenant de l'hydrogene et du co |
| US6458334B1 (en) | 2000-03-02 | 2002-10-01 | The Boc Group, Inc. | Catalytic partial oxidation of hydrocarbons |
| EP1413548A1 (en) * | 2002-10-23 | 2004-04-28 | Conocophillips Company | Regeneration of partial oxidation catalysts |
| US7066984B2 (en) | 2003-09-25 | 2006-06-27 | The Boc Group, Inc. | High recovery carbon monoxide production process |
| US7090826B2 (en) | 2002-12-23 | 2006-08-15 | The Boc Group, Inc. | Monolith based catalytic partial oxidation process for syngas production |
| US7214331B2 (en) | 2004-02-26 | 2007-05-08 | The Boc Group, Inc. | Catalyst configuration and methods for syngas production |
| US7351275B2 (en) | 2004-12-21 | 2008-04-01 | The Boc Group, Inc. | Carbon monoxide production process |
| RU2333797C2 (ru) * | 2003-12-18 | 2008-09-20 | Тийода Корпорейшн | Катализатор получения синтез-газа и способ получения синтез-газа с его использованием |
| RU2350386C1 (ru) * | 2007-12-06 | 2009-03-27 | Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук (статус государственного учреждения) | Катализатор, способ его приготовления и способ получения синтез-газа из метана |
| WO2010107332A1 (ru) * | 2009-03-20 | 2010-09-23 | Институт Катализа Имени Г.К.Борескова Сибирского Отделения Российской Академии Наук | Катализатор, способ его приготовления и способ получения синтез-газа из метана |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59116102A (ja) * | 1982-12-22 | 1984-07-04 | Osaka Gas Co Ltd | ルテニウム触媒を用いた還元性ガスの製造方法 |
| GB2163449B (en) * | 1984-07-18 | 1988-06-02 | Shell Int Research | Production of gas mixtures containing hydrogen and carbon monoxide |
| CA2004219A1 (en) * | 1988-11-30 | 1990-05-31 | Michael Dunster | Production of hydrogen from hydrocarbonaceous feedstock |
| LU102057B1 (en) * | 2020-09-09 | 2022-03-09 | Wurth Paul Sa | Method for operating a blast furnace installation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2141875A1 (de) * | 1971-08-20 | 1973-03-01 | Metallgesellschaft Ag | Verfahren zur herstellung eines reduktionsgases |
| JPS4853986A (enrdf_load_stackoverflow) * | 1971-11-04 | 1973-07-28 | ||
| JPS5227629B2 (enrdf_load_stackoverflow) * | 1972-01-10 | 1977-07-21 |
-
1972
- 1972-07-17 GB GB3334172A patent/GB1399137A/en not_active Expired
-
1973
- 1973-10-19 DE DE19732352438 patent/DE2352438A1/de not_active Ceased
- 1973-10-23 AU AU61690/73A patent/AU485072B2/en not_active Expired
- 1973-10-30 FR FR7338697A patent/FR2249030B1/fr not_active Expired
- 1973-11-06 JP JP48124906A patent/JPS5075590A/ja active Pending
- 1973-11-13 LU LU68795A patent/LU68795A1/xx unknown
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4767569A (en) * | 1984-04-05 | 1988-08-30 | The British Petroleum Company P.L.C. | Process for producing synthesis gas by partial combustion of hydrocarbons |
| US4758375A (en) * | 1984-05-02 | 1988-07-19 | The British Petroleum Company P.L.C. | Conversion process |
| US5149464A (en) * | 1989-06-30 | 1992-09-22 | Gas Research Institute | Catalytic gas conversion method |
| US6458334B1 (en) | 2000-03-02 | 2002-10-01 | The Boc Group, Inc. | Catalytic partial oxidation of hydrocarbons |
| US6551959B2 (en) | 2000-03-02 | 2003-04-22 | The Boc Group, Inc. | Catalytic monolith substrate made of ceria and titania |
| FR2811975A1 (fr) * | 2000-07-19 | 2002-01-25 | Air Liquide | Procede et dispositif de production d'un melange gazeux contenant de l'hydrogene et du co |
| FR2811976A1 (fr) * | 2000-07-19 | 2002-01-25 | Air Liquide | Procede et dispositif de production d'un melange gazeux contenant de l'hydrogene et du co par oxydation etagee d'un hydrocarbure |
| WO2002006290A3 (fr) * | 2000-07-19 | 2003-01-30 | Air Liquide | Procede et dispositif de production d'un melange gazeux contenant de l'hydrogene et du monoxyde de carbone |
| WO2002006154A1 (fr) * | 2000-07-19 | 2002-01-24 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procede et dispositif de production d'un melange gazeux contenant de l'hydrogene et du co par oxydation etagee d'un hydrocarbure |
| EP1413548A1 (en) * | 2002-10-23 | 2004-04-28 | Conocophillips Company | Regeneration of partial oxidation catalysts |
| US7005455B2 (en) | 2002-10-23 | 2006-02-28 | Conocophillips Company | Regeneration of partial oxidation catalysts |
| US7090826B2 (en) | 2002-12-23 | 2006-08-15 | The Boc Group, Inc. | Monolith based catalytic partial oxidation process for syngas production |
| US7066984B2 (en) | 2003-09-25 | 2006-06-27 | The Boc Group, Inc. | High recovery carbon monoxide production process |
| RU2333797C2 (ru) * | 2003-12-18 | 2008-09-20 | Тийода Корпорейшн | Катализатор получения синтез-газа и способ получения синтез-газа с его использованием |
| US7214331B2 (en) | 2004-02-26 | 2007-05-08 | The Boc Group, Inc. | Catalyst configuration and methods for syngas production |
| US7351275B2 (en) | 2004-12-21 | 2008-04-01 | The Boc Group, Inc. | Carbon monoxide production process |
| RU2350386C1 (ru) * | 2007-12-06 | 2009-03-27 | Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук (статус государственного учреждения) | Катализатор, способ его приготовления и способ получения синтез-газа из метана |
| WO2010107332A1 (ru) * | 2009-03-20 | 2010-09-23 | Институт Катализа Имени Г.К.Борескова Сибирского Отделения Российской Академии Наук | Катализатор, способ его приготовления и способ получения синтез-газа из метана |
Also Published As
| Publication number | Publication date |
|---|---|
| LU68795A1 (enrdf_load_stackoverflow) | 1975-08-20 |
| AU6169073A (en) | 1975-04-24 |
| JPS5075590A (enrdf_load_stackoverflow) | 1975-06-20 |
| FR2249030A1 (enrdf_load_stackoverflow) | 1975-05-23 |
| AU485072B2 (en) | 1975-04-24 |
| DE2352438A1 (de) | 1975-04-24 |
| FR2249030B1 (enrdf_load_stackoverflow) | 1978-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |