NO300027B1 - Fremgangsmåte og apparat for direkte bestemmelse av fysikalske egenskaper til hydrokarbonblandingsprodukter - Google Patents
Fremgangsmåte og apparat for direkte bestemmelse av fysikalske egenskaper til hydrokarbonblandingsprodukter Download PDFInfo
- Publication number
- NO300027B1 NO300027B1 NO883670A NO883670A NO300027B1 NO 300027 B1 NO300027 B1 NO 300027B1 NO 883670 A NO883670 A NO 883670A NO 883670 A NO883670 A NO 883670A NO 300027 B1 NO300027 B1 NO 300027B1
- Authority
- NO
- Norway
- Prior art keywords
- mixture
- product
- property
- properties
- component
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims description 108
- 238000000034 method Methods 0.000 title claims description 43
- 239000004215 Carbon black (E152) Substances 0.000 title claims description 15
- 229930195733 hydrocarbon Natural products 0.000 title claims description 15
- 150000002430 hydrocarbons Chemical class 0.000 title claims description 15
- 230000000704 physical effect Effects 0.000 title claims description 5
- 238000002156 mixing Methods 0.000 claims description 40
- 238000002835 absorbance Methods 0.000 claims description 29
- 230000014509 gene expression Effects 0.000 claims description 25
- 238000001228 spectrum Methods 0.000 claims description 25
- 230000003595 spectral effect Effects 0.000 claims description 23
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims description 17
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 16
- 239000011159 matrix material Substances 0.000 claims description 12
- 238000004821 distillation Methods 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 6
- 239000000295 fuel oil Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000002283 diesel fuel Substances 0.000 claims description 4
- 238000002329 infrared spectrum Methods 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 3
- 239000006259 organic additive Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 24
- 239000000047 product Substances 0.000 description 24
- 239000003085 diluting agent Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 18
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 12
- 239000002904 solvent Substances 0.000 description 11
- 238000005259 measurement Methods 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 7
- 230000000875 corresponding effect Effects 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 5
- 239000003502 gasoline Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- MRMOZBOQVYRSEM-UHFFFAOYSA-N tetraethyllead Chemical compound CC[Pb](CC)(CC)CC MRMOZBOQVYRSEM-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000011481 absorbance measurement Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000010561 standard procedure Methods 0.000 description 3
- 238000005292 vacuum distillation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004497 NIR spectroscopy Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004523 catalytic cracking Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- XFKBBSZEQRFVSL-UHFFFAOYSA-N dipropan-2-yl decanedioate Chemical group CC(C)OC(=O)CCCCCCCCC(=O)OC(C)C XFKBBSZEQRFVSL-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000491 multivariate analysis Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 101150087606 smi1 gene Proteins 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XOOGZRUBTYCLHG-UHFFFAOYSA-N tetramethyllead Chemical compound C[Pb](C)(C)C XOOGZRUBTYCLHG-UHFFFAOYSA-N 0.000 description 1
- 208000029761 vertebral disease Diseases 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2829—Mixtures of fuels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8711679A FR2619624B1 (fr) | 1987-08-18 | 1987-08-18 | Procede de determination des indices d'octane d'un melange complexe de carburants ou de constitution d'un tel melange ayant un indice d'octane determine par analyse spectrophotometrique proche infrarouge des constituants du melange |
| FR8807305A FR2632409B1 (fr) | 1988-06-01 | 1988-06-01 | Procede de determination des proprietes d'un fioul obtenu a partir d'un melange complexe de bases petrolieres ou de constitution d'un tel produit ayant des proprietes determinees par analyse spectrophotometrique proche infrarouge des constituants du melange |
| FR8807304A FR2632408B1 (fr) | 1988-06-01 | 1988-06-01 | Procede de determination des proprietes d'un gazole obtenu a partir d'un melange complexe de bases petrolieres ou de constitution d'un produit fini du type gazole ayant des proprietes determinees par analyse spectrophotometrique proche infrarouge des constituants du melange |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO883670D0 NO883670D0 (no) | 1988-08-17 |
| NO883670L NO883670L (no) | 1989-02-20 |
| NO300027B1 true NO300027B1 (no) | 1997-03-17 |
Family
ID=27251498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO883670A NO300027B1 (no) | 1987-08-18 | 1988-08-17 | Fremgangsmåte og apparat for direkte bestemmelse av fysikalske egenskaper til hydrokarbonblandingsprodukter |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5475612A (fr) |
| EP (1) | EP0305090B1 (fr) |
| JP (1) | JP2880171B2 (fr) |
| AU (1) | AU603920B2 (fr) |
| CA (1) | CA1325732C (fr) |
| DE (1) | DE3882847T2 (fr) |
| ES (1) | ES2041801T3 (fr) |
| NO (1) | NO300027B1 (fr) |
Families Citing this family (113)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0304232B1 (fr) * | 1987-08-18 | 1996-12-27 | Bp Oil International Limited | Procédé de détermination directe des propriétés physiques de produits hydrocarbonés |
| FR2625506B1 (fr) * | 1987-12-31 | 1992-02-21 | Bp Chimie Sa | Procede et appareillage de fabrication de polymeres controlee a l'aide d'un systeme de regulation comprenant un spectrophotometre infrarouge |
| FR2631957B1 (fr) * | 1988-05-30 | 1990-08-31 | Bp Chimie Sa | Procede et appareillage de fabrication d'olefines et de diolefines par reaction de vapocraquage d'hydrocarbures controlee a l'aide d'un systeme comprenant un spectrophotometre infrarouge |
| US5349188A (en) † | 1990-04-09 | 1994-09-20 | Ashland Oil, Inc. | Near infrared analysis of piano constituents and octane number of hydrocarbons |
| US5145785A (en) * | 1990-12-11 | 1992-09-08 | Ashland Oil, Inc. | Determination of aromatics in hydrocarbons by near infrared spectroscopy and calibration therefor |
| US5218004A (en) * | 1990-08-16 | 1993-06-08 | Rohm And Haas Company | Process for enhancing the surface area of an adsorbent copolymer |
| AU652440B2 (en) * | 1991-05-03 | 1994-08-25 | Nalco Chemical Company | Labeling of hydrocarbons |
| US5223714A (en) * | 1991-11-26 | 1993-06-29 | Ashland Oil, Inc. | Process for predicting properties of multi-component fluid blends |
| FR2685775B1 (fr) * | 1991-12-27 | 1994-03-18 | Bp France | Procede de determination des teneurs en polycycliques aromatiques a partir d'un melange d'hydrocarbures par analyse spectrophotometrique proche infrarouge des constituants du melange. |
| CA2070847A1 (fr) * | 1992-06-10 | 1993-12-11 | Jyrki Kauppinen | Analyse d'un spectre infrarouge a composantes multiples |
| CA2146985A1 (fr) * | 1992-10-15 | 1994-04-28 | Andrew Boyd | Methode pour prevoir l'indice de cetane des gasoils |
| AU4380993A (en) * | 1993-05-17 | 1994-12-12 | Ashland Oil, Inc. | Sampling and analysis system and method |
| US5426053A (en) * | 1993-09-21 | 1995-06-20 | Exxon Research And Engineering Company | Optimization of acid strength and total organic carbon in acid processes (C-2644) |
| US5404015A (en) * | 1993-09-21 | 1995-04-04 | Exxon Research & Engineering Co. | Method and system for controlling and optimizing isomerization processes |
| US5430295A (en) * | 1993-12-16 | 1995-07-04 | Uop And Arco | Process for controlling blending |
| US5419185A (en) * | 1994-02-10 | 1995-05-30 | Exxon Research And Engineering Company | Optimization of the process to manufacture dewaxed oil |
| EP0706050A1 (fr) * | 1994-10-07 | 1996-04-10 | Bp Chemicals S.N.C. | Détermination d'une caractéristique d'un lubrifiant |
| EP0706049A1 (fr) * | 1994-10-07 | 1996-04-10 | Bp Chemicals S.N.C. | Détermination des caractéristiques de craquage |
| EP0706040A1 (fr) * | 1994-10-07 | 1996-04-10 | Bp Chemicals S.N.C. | Détermination de propriété |
| US5935863A (en) * | 1994-10-07 | 1999-08-10 | Bp Chemicals Limited | Cracking property determination and process control |
| EP0706041A1 (fr) * | 1994-10-07 | 1996-04-10 | Bp Chemicals S.N.C. | Détermination de propriété de produits chimiques |
| AU689016B2 (en) * | 1994-12-13 | 1998-03-19 | Exxon Research And Engineering Company | Non linear multivariate infrared analysis method |
| US6070128A (en) * | 1995-06-06 | 2000-05-30 | Eutech Engineering Solutions Limited | Method for determining properties using near infra-red (NIR) spectroscopy |
| US5750995A (en) * | 1996-02-16 | 1998-05-12 | Boston Advanced Technologies, Inc. | Methods and devices for fuel characterization and optimal fuel identification on-site at a fuel delivery dispenser |
| WO1997005483A1 (fr) * | 1995-07-26 | 1997-02-13 | Boston Advanced Technologies, Inc. | Techniques et appareils de caracterisation de carburants |
| US5827952A (en) * | 1996-03-26 | 1998-10-27 | Sandia National Laboratories | Method of and apparatus for determining deposition-point temperature |
| US5661233A (en) * | 1996-03-26 | 1997-08-26 | Sandia Corporation | Acoustic-wave sensor apparatus for analyzing a petroleum-based composition and sensing solidification of constituents therein |
| US5668373A (en) * | 1996-04-26 | 1997-09-16 | Trustees Of Tufts College | Methods and apparatus for analysis of complex mixtures |
| US6512156B1 (en) | 1996-10-22 | 2003-01-28 | The Dow Chemical Company | Method and apparatus for controlling severity of cracking operations by near infrared analysis in the gas phase using fiber optics |
| FR2754899B1 (fr) * | 1996-10-23 | 1998-11-27 | Elf Antar France | Procede de suivi et de surveillance d'une unite de fabrication et/ou d'un spectrometre proche infrarouge au moyen d'un critere de qualite d'ensembles de spectres |
| US5796251A (en) * | 1996-11-07 | 1998-08-18 | Uop | Process for controlling blending using nuclear magnetic resonance spectroscopy |
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| US6140647A (en) * | 1997-12-19 | 2000-10-31 | Marathon Ashland Petroleum | Gasoline RFG analysis by a spectrometer |
| US6087662A (en) * | 1998-05-22 | 2000-07-11 | Marathon Ashland Petroleum Llc | Process for analysis of asphaltene content in hydrocarbon mixtures by middle infrared spectroscopy |
| US6025305A (en) * | 1998-08-04 | 2000-02-15 | Exxon Research And Engineering Co. | Process for producing a lubricant base oil having improved oxidative stability |
| US6008164A (en) * | 1998-08-04 | 1999-12-28 | Exxon Research And Engineering Company | Lubricant base oil having improved oxidative stability |
| US6475960B1 (en) | 1998-09-04 | 2002-11-05 | Exxonmobil Research And Engineering Co. | Premium synthetic lubricants |
| US6080301A (en) * | 1998-09-04 | 2000-06-27 | Exxonmobil Research And Engineering Company | Premium synthetic lubricant base stock having at least 95% non-cyclic isoparaffins |
| US6159255A (en) * | 1998-12-11 | 2000-12-12 | Sunoco, Inc. (R&M) | Method for predicting intrinsic properties of a mixture |
| KR100326588B1 (ko) * | 1998-12-28 | 2002-10-12 | 에스케이 주식회사 | 근적외선분광분석기술을활용한자동원유분석방법 |
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| US6907351B2 (en) | 2001-08-01 | 2005-06-14 | Aventis Animal Nutrition S.A. | Customer-based prediction method and system using near infrared reflectance spectra of materials |
| US20040111274A1 (en) * | 2002-01-14 | 2004-06-10 | Tak Industrial Corporation | System and method for deploying a virtual laboratory environment for a business |
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| US10677718B2 (en) | 2011-02-22 | 2020-06-09 | Saudi Arabian Oil Company | Characterization of crude oil by near infrared spectroscopy |
| US11022588B2 (en) | 2011-02-22 | 2021-06-01 | Saudi Arabian Oil Company | Characterization of crude oil by simulated distillation |
| US10684239B2 (en) | 2011-02-22 | 2020-06-16 | Saudi Arabian Oil Company | Characterization of crude oil by NMR spectroscopy |
| US10031121B2 (en) | 2011-02-22 | 2018-07-24 | Saudi Arabian Oil Company | Characterization of an API gravity value of crude oil by ultraviolet visible spectroscopy |
| WO2016111982A1 (fr) * | 2015-01-05 | 2016-07-14 | Saudi Arabian Oil Company | Caractérisation de pétrole brut par spectroscopie proche infrarouge |
| US10571452B2 (en) | 2011-06-28 | 2020-02-25 | Saudi Arabian Oil Company | Characterization of crude oil by high pressure liquid chromatography |
| US10725013B2 (en) | 2011-06-29 | 2020-07-28 | Saudi Arabian Oil Company | Characterization of crude oil by Fourier transform ion cyclotron resonance mass spectrometry |
| US9244052B2 (en) | 2011-12-22 | 2016-01-26 | Exxonmobil Research And Engineering Company | Global crude oil quality monitoring using direct measurement and advanced analytic techniques for raw material valuation |
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| EP3155402B1 (fr) * | 2014-06-13 | 2019-11-06 | Topnir Systems SAS | Procédé de préparation d'un produit cible certifié d'un mélange de constituants par analyse spectrale |
| JP6836507B2 (ja) | 2015-01-05 | 2021-03-03 | サウジ アラビアン オイル カンパニー | 紫外可視分光法による原油のキャラクタリゼーション |
| CN107257918B (zh) | 2015-01-05 | 2020-10-23 | 沙特阿拉伯石油公司 | 通过热重分析表征原油及其级分 |
| JP2018509594A (ja) | 2015-01-05 | 2018-04-05 | サウジ アラビアン オイル カンパニー | ナフサ流の相対評価法 |
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-
1988
- 1988-08-11 ES ES198888307463T patent/ES2041801T3/es not_active Expired - Lifetime
- 1988-08-11 EP EP88307463A patent/EP0305090B1/fr not_active Expired - Lifetime
- 1988-08-11 DE DE88307463T patent/DE3882847T2/de not_active Expired - Fee Related
- 1988-08-16 AU AU20954/88A patent/AU603920B2/en not_active Ceased
- 1988-08-17 NO NO883670A patent/NO300027B1/no not_active IP Right Cessation
- 1988-08-17 CA CA000575007A patent/CA1325732C/fr not_active Expired - Fee Related
- 1988-08-18 JP JP63203935A patent/JP2880171B2/ja not_active Expired - Fee Related
-
1994
- 1994-03-04 US US08/206,250 patent/US5475612A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE3882847T2 (de) | 1993-11-18 |
| JP2880171B2 (ja) | 1999-04-05 |
| JPH01113636A (ja) | 1989-05-02 |
| EP0305090B1 (fr) | 1993-08-04 |
| AU603920B2 (en) | 1990-11-29 |
| DE3882847D1 (de) | 1993-09-09 |
| NO883670D0 (no) | 1988-08-17 |
| EP0305090A2 (fr) | 1989-03-01 |
| ES2041801T3 (es) | 1993-12-01 |
| AU2095488A (en) | 1989-02-23 |
| US5475612A (en) | 1995-12-12 |
| EP0305090A3 (en) | 1989-07-12 |
| NO883670L (no) | 1989-02-20 |
| CA1325732C (fr) | 1994-01-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1K | Patent expired |