SE461336B - Foerfarande foer avmetallisering och hydroomvandling av metallhaltiga kolvaeteingaangsoljor jaemte syntetisk katalysator avsedd att anvaendas vid foerfarandet - Google Patents
Foerfarande foer avmetallisering och hydroomvandling av metallhaltiga kolvaeteingaangsoljor jaemte syntetisk katalysator avsedd att anvaendas vid foerfarandetInfo
- Publication number
- SE461336B SE461336B SE8403958A SE8403958A SE461336B SE 461336 B SE461336 B SE 461336B SE 8403958 A SE8403958 A SE 8403958A SE 8403958 A SE8403958 A SE 8403958A SE 461336 B SE461336 B SE 461336B
- Authority
- SE
- Sweden
- Prior art keywords
- catalyst
- particles
- molybdenum
- weight
- range
- Prior art date
Links
- 239000003921 oil Substances 0.000 title claims description 45
- 238000000034 method Methods 0.000 title claims description 29
- 229930195733 hydrocarbon Natural products 0.000 title claims description 22
- 150000002430 hydrocarbons Chemical class 0.000 title claims description 22
- 239000004215 Carbon black (E152) Substances 0.000 title claims description 21
- 238000006243 chemical reaction Methods 0.000 title claims description 19
- 239000003054 catalyst Substances 0.000 claims description 125
- 239000002245 particle Substances 0.000 claims description 56
- 239000000463 material Substances 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 29
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 18
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 18
- 229910052750 molybdenum Inorganic materials 0.000 claims description 18
- 239000011733 molybdenum Substances 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 14
- 238000009835 boiling Methods 0.000 claims description 12
- 150000002739 metals Chemical class 0.000 claims description 12
- 239000003208 petroleum Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 7
- 150000004706 metal oxides Chemical class 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 3
- 238000001465 metallisation Methods 0.000 claims description 2
- 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 claims 1
- 229910001570 bauxite Inorganic materials 0.000 description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 238000009826 distribution Methods 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 3
- 238000005194 fractionation Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000009533 lab test Methods 0.000 description 3
- 150000002736 metal compounds Chemical class 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Inorganic materials O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007952 growth promoter Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007210 heterogeneous catalysis Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002816 nickel compounds Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000003260 vortexing Methods 0.000 description 1
Classifications
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/66—Pore distribution
-
- 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
-
- 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
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/31—Density
-
- 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
- C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
- C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
- C10G45/04—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used
-
- 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
- C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
- C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
- C10G45/14—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing with moving solid particles
- C10G45/20—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing with moving solid particles according to the "fluidised-bed" technique
-
- 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
- C10G47/00—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions
- C10G47/24—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions with moving solid particles
- C10G47/30—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions with moving solid particles according to the "fluidised-bed" technique
-
- 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
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/28—Molybdenum
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52186283A | 1983-08-10 | 1983-08-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8403958D0 SE8403958D0 (sv) | 1984-08-02 |
| SE8403958L SE8403958L (sv) | 1985-02-11 |
| SE461336B true SE461336B (sv) | 1990-02-05 |
Family
ID=24078456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8403958A SE461336B (sv) | 1983-08-10 | 1984-08-02 | Foerfarande foer avmetallisering och hydroomvandling av metallhaltiga kolvaeteingaangsoljor jaemte syntetisk katalysator avsedd att anvaendas vid foerfarandet |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS6054735A (fr) |
| CA (1) | CA1217756A (fr) |
| DE (1) | DE3428924A1 (fr) |
| FR (1) | FR2550544B1 (fr) |
| IT (1) | IT1181820B (fr) |
| MX (1) | MX172236B (fr) |
| SE (1) | SE461336B (fr) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60232244A (ja) * | 1984-05-02 | 1985-11-18 | Nippon Mining Co Ltd | 重質油の水素化脱金属用触媒及びこれを用いる重質油の脱金属方法 |
| US4888104A (en) * | 1988-09-06 | 1989-12-19 | Intevep, S.A. | Catalytic system for the hydroconversion of heavy oils |
| US5472928A (en) * | 1989-07-19 | 1995-12-05 | Scheuerman; Georgieanna L. | Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed |
| US5589057A (en) * | 1989-07-19 | 1996-12-31 | Chevron U.S.A. Inc. | Method for extending the life of hydroprocessing catalyst |
| US5492617A (en) * | 1989-07-19 | 1996-02-20 | Trimble; Harold J. | Apparatus and method for quenching in hydroprocessing of a hydrocarbon feed stream |
| US5498327A (en) * | 1989-07-19 | 1996-03-12 | Stangeland; Bruce E. | Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed |
| US5916529A (en) * | 1989-07-19 | 1999-06-29 | Chevron U.S.A. Inc | Multistage moving-bed hydroprocessing reactor with separate catalyst addition and withdrawal systems for each stage, and method for hydroprocessing a hydrocarbon feed stream |
| US5885534A (en) * | 1996-03-18 | 1999-03-23 | Chevron U.S.A. Inc. | Gas pocket distributor for hydroprocessing a hydrocarbon feed stream |
| US5879642A (en) * | 1996-04-24 | 1999-03-09 | Chevron U.S.A. Inc. | Fixed bed reactor assembly having a guard catalyst bed |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1040000B (de) * | 1953-09-12 | 1958-10-02 | Exxon Research Engineering Co | Verfahren zur Herstellung von Molybdaenoxyd-Katalysatoren auf Tonerdetraegern |
| US3634464A (en) * | 1969-04-02 | 1972-01-11 | Shell Oil Co | Olefin epoxidation |
| US3819509A (en) * | 1971-11-26 | 1974-06-25 | Hydrocarbon Research Inc | Low sulfur fuel oil from high metals containing petroleum residuum |
| GB1410924A (en) * | 1971-12-22 | 1975-10-22 | Shell Int Research | Hydrocarbon conversion process |
| US3901792A (en) * | 1972-05-22 | 1975-08-26 | Hydrocarbon Research Inc | Multi-zone method for demetallizing and desulfurizing crude oil or atmospheric residual oil |
| US3814683A (en) * | 1972-06-14 | 1974-06-04 | Gulf Research Development Co | Hydrodesulfurization process with catalysts whose pore sizes are concentrated in a narrow range |
| US3964995A (en) * | 1972-07-24 | 1976-06-22 | Hydrocarbon Research, Inc. | Hydrodesulfurization process |
| US3876523A (en) * | 1973-08-29 | 1975-04-08 | Mobil Oil Corp | Catalyst for residua demetalation and desulfurization |
| US4040982A (en) * | 1976-01-12 | 1977-08-09 | Nalco Chemical Company | Ozonization catalyst |
| NL187026C (nl) * | 1976-07-08 | 1991-05-01 | Shell Int Research | Werkwijze voor het ontmetalliseren van koolwaterstofolien. |
| GB2011463B (en) * | 1977-12-21 | 1982-05-19 | Standard Oil Co | Process for the hydrotreating of heafy hydrocarbon streams |
| US4328127A (en) * | 1980-09-16 | 1982-05-04 | Mobil Oil Corporation | Residua demetalation/desulfurization catalyst |
| FR2504121A1 (fr) * | 1981-04-15 | 1982-10-22 | Raffinage Cie Francaise | Procede d'oligomerisation d'olefines en presence de catalyseur au trifluorure de bore sur un support a base d'alumine et catalyseur pour la mise en oeuvre de ce procede |
-
1984
- 1984-06-28 CA CA000457674A patent/CA1217756A/fr not_active Expired
- 1984-08-02 SE SE8403958A patent/SE461336B/sv not_active IP Right Cessation
- 1984-08-06 DE DE3428924A patent/DE3428924A1/de active Granted
- 1984-08-07 JP JP59164333A patent/JPS6054735A/ja active Pending
- 1984-08-08 FR FR8412555A patent/FR2550544B1/fr not_active Expired
- 1984-08-10 MX MX202341A patent/MX172236B/es unknown
- 1984-11-09 IT IT48692/84A patent/IT1181820B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| DE3428924A1 (de) | 1985-02-28 |
| SE8403958D0 (sv) | 1984-08-02 |
| MX172236B (es) | 1993-12-08 |
| IT1181820B (it) | 1987-09-30 |
| IT8448692A0 (it) | 1984-08-03 |
| SE8403958L (sv) | 1985-02-11 |
| CA1217756A (fr) | 1987-02-10 |
| FR2550544A1 (fr) | 1985-02-15 |
| JPS6054735A (ja) | 1985-03-29 |
| DE3428924C2 (fr) | 1987-12-10 |
| FR2550544B1 (fr) | 1988-03-04 |
| IT8448692A1 (it) | 1986-05-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
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| NUG | Patent has lapsed |