DE2360092A1 - Verfahren und katalysatoren zur herstellung von mehrbereichsoelen mit verbesserten eigenschaften - Google Patents
Verfahren und katalysatoren zur herstellung von mehrbereichsoelen mit verbesserten eigenschaftenInfo
- Publication number
- DE2360092A1 DE2360092A1 DE2360092A DE2360092A DE2360092A1 DE 2360092 A1 DE2360092 A1 DE 2360092A1 DE 2360092 A DE2360092 A DE 2360092A DE 2360092 A DE2360092 A DE 2360092A DE 2360092 A1 DE2360092 A1 DE 2360092A1
- Authority
- DE
- Germany
- Prior art keywords
- oil
- obei
- catalyst
- oils
- paraffin
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 32
- 239000003054 catalyst Substances 0.000 title claims description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000010742 number 1 fuel oil Substances 0.000 title 1
- 239000003921 oil Substances 0.000 claims description 58
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 20
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 18
- 229910052736 halogen Inorganic materials 0.000 claims description 12
- 238000009835 boiling Methods 0.000 claims description 11
- 150000002367 halogens Chemical class 0.000 claims description 11
- 239000012188 paraffin wax Substances 0.000 claims description 11
- 229910021529 ammonia Inorganic materials 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 238000004517 catalytic hydrocracking Methods 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 239000011737 fluorine Substances 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910000510 noble metal Inorganic materials 0.000 claims description 4
- 239000010779 crude oil Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- 230000002441 reversible effect Effects 0.000 claims 1
- 229930195733 hydrocarbon Natural products 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 239000000571 coke Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000002199 base oil Substances 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 101100352919 Caenorhabditis elegans ppm-2 gene Proteins 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UKCBKQLNTLMFAA-UHFFFAOYSA-N F.[F] Chemical compound F.[F] UKCBKQLNTLMFAA-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- HHUIAYDQMNHELC-UHFFFAOYSA-N [O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O HHUIAYDQMNHELC-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- GQVCNZBQZKXBMX-UHFFFAOYSA-N butan-2-one;toluene Chemical compound CCC(C)=O.CC1=CC=CC=C1 GQVCNZBQZKXBMX-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G67/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only
- C10G67/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only plural serial stages only
- C10G67/04—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only plural serial stages only including solvent extraction as the refining step in the absence of hydrogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
- C10G65/02—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only
- C10G65/04—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps
- C10G65/043—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps at least one step being a change in the structural skeleton
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
- C10G65/02—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only
- C10G65/12—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including cracking steps and other hydrotreatment steps
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/10—Lubricating oil
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7243935A FR2209827B1 (zh) | 1972-12-08 | 1972-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2360092A1 true DE2360092A1 (de) | 1974-06-12 |
Family
ID=9108467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2360092A Withdrawn DE2360092A1 (de) | 1972-12-08 | 1973-12-03 | Verfahren und katalysatoren zur herstellung von mehrbereichsoelen mit verbesserten eigenschaften |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3915843A (zh) |
| JP (1) | JPS5743118B2 (zh) |
| BE (1) | BE808116A (zh) |
| DE (1) | DE2360092A1 (zh) |
| ES (1) | ES421295A1 (zh) |
| FR (1) | FR2209827B1 (zh) |
| GB (1) | GB1419286A (zh) |
| IT (1) | IT1002195B (zh) |
| NL (1) | NL7316796A (zh) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4139492A (en) * | 1977-08-10 | 1979-02-13 | American Cyanamid Company | Hydrotreating catalysts |
| US4975177A (en) * | 1985-11-01 | 1990-12-04 | Mobil Oil Corporation | High viscosity index lubricants |
| US4851109A (en) * | 1987-02-26 | 1989-07-25 | Mobil Oil Corporation | Integrated hydroprocessing scheme for production of premium quality distillates and lubricants |
| US5273672A (en) * | 1987-03-02 | 1993-12-28 | Idemitsu Kosan Company Limited | Lubricating oil composition containing a partial ester of a polyhydric alcohol and a substituted succinic acid ester |
| JPH0662988B2 (ja) * | 1987-03-12 | 1994-08-17 | 出光興産株式会社 | 内燃機関用潤滑油基油および組成物 |
| US5064546A (en) * | 1987-04-11 | 1991-11-12 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition |
| JP2564556B2 (ja) * | 1987-06-30 | 1996-12-18 | 出光興産 株式会社 | 内燃機関用潤滑油組成物 |
| US4943672A (en) * | 1987-12-18 | 1990-07-24 | Exxon Research And Engineering Company | Process for the hydroisomerization of Fischer-Tropsch wax to produce lubricating oil (OP-3403) |
| US4959337A (en) * | 1987-12-18 | 1990-09-25 | Exxon Research And Engineering Company | Wax isomerization catalyst and method for its production |
| US4900707A (en) * | 1987-12-18 | 1990-02-13 | Exxon Research And Engineering Company | Method for producing a wax isomerization catalyst |
| US5158671A (en) * | 1987-12-18 | 1992-10-27 | Exxon Research And Engineering Company | Method for stabilizing hydroisomerates |
| US4929795A (en) * | 1987-12-18 | 1990-05-29 | Exxon Research And Engineering Company | Method for isomerizing wax to lube base oils using an isomerization catalyst |
| US4937399A (en) * | 1987-12-18 | 1990-06-26 | Exxon Research And Engineering Company | Method for isomerizing wax to lube base oils using a sized isomerization catalyst |
| US5059299A (en) * | 1987-12-18 | 1991-10-22 | Exxon Research And Engineering Company | Method for isomerizing wax to lube base oils |
| US4923588A (en) * | 1988-12-16 | 1990-05-08 | Exxon Research And Engineering Company | Wax isomerization using small particle low fluoride content catalysts |
| US4992159A (en) * | 1988-12-16 | 1991-02-12 | Exxon Research And Engineering Company | Upgrading waxy distillates and raffinates by the process of hydrotreating and hydroisomerization |
| US4906601A (en) * | 1988-12-16 | 1990-03-06 | Exxon Research And Engineering Company | Small particle low fluoride content catalyst |
| BR9303997A (pt) * | 1993-10-01 | 1995-05-30 | Petroleo Brasileiro Sa | Processo para produção de óleos librificantes básicos de altos índices de viscosidade e óleo diesel de alto número de cetano |
| US5689031A (en) | 1995-10-17 | 1997-11-18 | Exxon Research & Engineering Company | Synthetic diesel fuel and process for its production |
| US6296757B1 (en) | 1995-10-17 | 2001-10-02 | Exxon Research And Engineering Company | Synthetic diesel fuel and process for its production |
| US5766274A (en) | 1997-02-07 | 1998-06-16 | Exxon Research And Engineering Company | Synthetic jet fuel and process for its production |
| US6333289B1 (en) | 1998-04-10 | 2001-12-25 | Institut Francais Du Petrole | Process for activating catalysts for isomerizing aromatic compounds containing eight carbon atoms |
| FR2777207B1 (fr) * | 1998-04-10 | 2000-05-19 | Inst Francais Du Petrole | Procede d'activation des catalyseurs d'isomerisation des composes aromatiques a huit atomes de carbone |
| US6313363B1 (en) | 1998-04-10 | 2001-11-06 | Institut Francais Du Petrole | Process for isomerizing aromatic compounds containing eight carbon atoms |
| FR2784686B1 (fr) | 1998-09-10 | 2001-02-23 | Inst Francais Du Petrole | Procede d'isomerisation des composes aromatiques a huit atomes de carbone en deux etapes successives et utilisant un catalyseur active |
| US7101928B1 (en) * | 1999-09-17 | 2006-09-05 | Landec Corporation | Polymeric thickeners for oil-containing compositions |
| WO2015164682A1 (en) | 2014-04-25 | 2015-10-29 | The Lubrizol Corporation | Multigrade lubricating compositions |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3629096A (en) * | 1967-06-21 | 1971-12-21 | Atlantic Richfield Co | Production of technical white mineral oil |
| US3487005A (en) * | 1968-02-12 | 1969-12-30 | Chevron Res | Production of low pour point lubricating oils by catalytic dewaxing |
| US3530061A (en) * | 1969-07-16 | 1970-09-22 | Mobil Oil Corp | Stable hydrocarbon lubricating oils and process for forming same |
| US3711399A (en) * | 1970-12-24 | 1973-01-16 | Texaco Inc | Selective hydrocracking and isomerization of paraffin hydrocarbons |
| GB1429291A (en) * | 1972-03-07 | 1976-03-24 | Shell Int Research | Process for the preparation of lubricating oil |
| CA1003778A (en) * | 1972-04-06 | 1977-01-18 | Peter Ladeur | Hydrocarbon conversion process |
| GB1400013A (en) * | 1972-04-17 | 1975-07-16 | British Petroleum Co | Improvements relating to the production of lubricating oils |
| US3790470A (en) * | 1972-12-06 | 1974-02-05 | Texaco Inc | Production of lubricating oils |
-
1972
- 1972-12-08 FR FR7243935A patent/FR2209827B1/fr not_active Expired
-
1973
- 1973-12-03 BE BE1005550A patent/BE808116A/xx unknown
- 1973-12-03 DE DE2360092A patent/DE2360092A1/de not_active Withdrawn
- 1973-12-07 US US422902A patent/US3915843A/en not_active Expired - Lifetime
- 1973-12-07 GB GB5691973A patent/GB1419286A/en not_active Expired
- 1973-12-07 ES ES421295A patent/ES421295A1/es not_active Expired
- 1973-12-07 NL NL7316796A patent/NL7316796A/xx not_active Application Discontinuation
- 1973-12-08 JP JP48140243A patent/JPS5743118B2/ja not_active Expired
- 1973-12-10 IT IT32033/73A patent/IT1002195B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| US3915843A (en) | 1975-10-28 |
| GB1419286A (en) | 1975-12-31 |
| IT1002195B (it) | 1976-05-20 |
| JPS4996002A (zh) | 1974-09-11 |
| JPS5743118B2 (zh) | 1982-09-13 |
| FR2209827B1 (zh) | 1976-01-30 |
| BE808116A (fr) | 1974-06-04 |
| ES421295A1 (es) | 1976-04-16 |
| FR2209827A1 (zh) | 1974-07-05 |
| NL7316796A (zh) | 1974-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| 8139 | Disposal/non-payment of the annual fee |