ES2182995T3 - Agente reductor de la resistencia al flujo de baja viscosidad y alta concentracion y proceso para el mismo. - Google Patents
Agente reductor de la resistencia al flujo de baja viscosidad y alta concentracion y proceso para el mismo.Info
- Publication number
- ES2182995T3 ES2182995T3 ES96921636T ES96921636T ES2182995T3 ES 2182995 T3 ES2182995 T3 ES 2182995T3 ES 96921636 T ES96921636 T ES 96921636T ES 96921636 T ES96921636 T ES 96921636T ES 2182995 T3 ES2182995 T3 ES 2182995T3
- Authority
- ES
- Spain
- Prior art keywords
- polymer
- solvent
- braking
- reducing
- suspension
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/06—Treatment of polymer solutions
- C08F6/12—Separation of polymers from solutions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/143—Organic compounds mixtures of organic macromolecular compounds with organic non-macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/16—Hydrocarbons
- C10L1/1625—Hydrocarbons macromolecular compounds
- C10L1/1633—Hydrocarbons macromolecular compounds homo- or copolymers obtained by reactions only involving carbon-to carbon unsaturated bonds
- C10L1/1641—Hydrocarbons macromolecular compounds homo- or copolymers obtained by reactions only involving carbon-to carbon unsaturated bonds from compounds containing aliphatic monomers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
- C10L1/1822—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms
- C10L1/1824—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms mono-hydroxy
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
- C10L1/1852—Ethers; Acetals; Ketals; Orthoesters
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
- C10L1/1857—Aldehydes; Ketones
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/188—Carboxylic acids; metal salts thereof
- C10L1/1881—Carboxylic acids; metal salts thereof carboxylic group attached to an aliphatic carbon atom
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/19—Esters ester radical containing compounds; ester ethers; carbonic acid esters
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/28—Organic compounds containing silicon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Public Health (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
PUEDEN PREPARARSE AGENTES REDUCTORES DEL FRENADO DE ELEVADA CONCENTRACION Y BAJA VISCOSIDAD AÑADIENDO LENTAMENTE UN NO DISOLVENTE LIQUIDO (POR EJEMPLO ALCOHOL ISOPROPILICO) PARA UN POLIMERO REDUCTOR DEL FRENADO (POR EJEMPLO UNA POLIALFAOLEFINA) A UNA MEZCLA DEL POLIMERO Y EL DISOLVENTE (POR EJEMPLO QUEROSENO) EN EL CUAL ESTA DISUELTO EL POLIMERO. CUANDO SE AÑADE EL SUFICIENTE NO DISOLVENTE, EL POLIMERO PRECIPITA EN PARTICULAS FINAS. ENTONCES SE ELIMINA LA MEZCLA SOBRENADANTE DE DISOLVENTE Y NO DISOLVENTE DEL CONCENTRADO DE SUSPENSION DE POLIMERO PRECIPITADO. PUEDE ELIMINARSE MAS DISOLVENTE CONTENIDO EN EL CONCENTRADO DE SUSPENSION MEDIANTE EVAPORACION O POSTERIOR EXTRACCION CON EL NO DISOLVENTE LIQUIDO. EL CONCENTRADO DE SUSPENSION RESULTANTE SE DISUELVE RAPIDAMENTE EN CORRIENTES DE HIDROCARBUROS FLUIDAS PARA REDUCIR SU FRENADO Y PRODUCE UNOS RESULTADOS DE REDUCCION DE FRENADO EXCEPCIONALMENTE BUENOS A BAJAS CONCENTRACIONES. ADEMAS NO SE NECESITAN SONDAS DE INYECCION U OTRO EQUIPO ESPECIALPARA INTRODUCIR LA SUSPENSION REDUCTORA DEL FRENADO EN LA CORRIENTE DE HIDROCARBURO, NI TAMPOCO ES NECESARIO TRITURAR EL POLIMERO PARA FORMAR UNA SUSPENSION DE AGENTE REDUCTOR DEL FRENADO ADECUADA.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/496,489 US5733953A (en) | 1995-06-29 | 1995-06-29 | Low viscosity, high concentration drag reducing agent and method therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2182995T3 true ES2182995T3 (es) | 2003-03-16 |
Family
ID=23972872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES96921636T Expired - Lifetime ES2182995T3 (es) | 1995-06-29 | 1996-06-14 | Agente reductor de la resistencia al flujo de baja viscosidad y alta concentracion y proceso para el mismo. |
Country Status (8)
Country | Link |
---|---|
US (1) | US5733953A (es) |
EP (1) | EP0835268B1 (es) |
AU (1) | AU6281096A (es) |
DE (1) | DE69623293T2 (es) |
DK (1) | DK0835268T3 (es) |
ES (1) | ES2182995T3 (es) |
NO (1) | NO315945B1 (es) |
WO (1) | WO1997001582A1 (es) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6015779A (en) | 1996-03-19 | 2000-01-18 | Energy & Environmental International, L.C. | Methods for forming amorphous ultra-high molecular weight polyalphaolefin drag reducing agents |
US6126872A (en) * | 1998-01-27 | 2000-10-03 | Baker Hughes Incorporated | Microencapsulated drag reducing agents |
US6178980B1 (en) | 1998-08-26 | 2001-01-30 | Texaco Inc. | Method for reducing the pipeline drag of heavy oil and compositions useful therein |
FI117704B (fi) * | 2000-05-15 | 2007-01-31 | M I Finland Oy | Menetelmä vastusta vähentävän koostumuksen valmistamiseksi ja menetelmä hiilivetyvirtauksen vastuksen vähentämiseksi |
US6815011B2 (en) | 2000-11-27 | 2004-11-09 | Energy & Environmental International, L.C. | Alpha olefin monomer partitioning agents for drag reducing agents and methods of forming drag reducing agents using alpha olefin monomer partitioning agents |
ATE458758T1 (de) | 2001-01-16 | 2010-03-15 | Beta Technologie Ag | Verfahren zur herstellung von amorphen polyolefinen mit ultrahohem molekulargewicht zur strömungbeschleunigung |
US6774094B2 (en) | 2001-04-24 | 2004-08-10 | Baker Hughes Incorporated | Drag reduction using fatty acids |
JP4116266B2 (ja) * | 2001-05-25 | 2008-07-09 | 株式会社オメガ | 携帯可能な殺菌洗浄水の生成方法と其の装置 |
US7012046B2 (en) * | 2001-06-08 | 2006-03-14 | Eaton Gerald B | Drag reducing agent slurries having alfol alcohols and processes for forming drag reducing agent slurries having alfol alcohols |
US6989357B2 (en) * | 2001-06-08 | 2006-01-24 | Eaton Gerald B | Alcohol absorbed polyalphaolefin drag reducing agents |
US6841593B2 (en) * | 2001-07-05 | 2005-01-11 | Baker Hughes Incorporated | Microencapsulated and macroencapsulated drag reducing agents |
US7018434B2 (en) | 2002-04-18 | 2006-03-28 | Southwest Research Institute | Removal of drag reducer additive from fuel by treatment with selected activated carbons and graphites |
US6649670B1 (en) * | 2002-12-17 | 2003-11-18 | Baker Hughes Incorporated | Continuous neat polymerization and ambient grinding methods of polyolefin drag reducing agents |
US6894088B2 (en) * | 2003-03-24 | 2005-05-17 | Baker Hughes Incorporated | Process for homogenizing polyolefin drag reducing agents |
US7364599B2 (en) * | 2003-06-03 | 2008-04-29 | Southwest Research Institute | Methods for increased removal of drag reducer additives from liquid hydrocarbon fuel |
US7264640B2 (en) * | 2003-06-03 | 2007-09-04 | Southwest Research Institute | Method for improving the performance of engines powered by liquid hydrocarbon fuel |
US7261747B2 (en) * | 2004-03-08 | 2007-08-28 | Southwest Research Institute | Removal of drag reducer additive from liquid hydrocarbon fuel using attapulgus clay |
CA2606796A1 (en) * | 2005-06-14 | 2006-12-28 | Baker Hughes Incorporated | Combination of polymer slurry types for optimum pipeline drag reduction |
US20080064785A1 (en) * | 2005-06-14 | 2008-03-13 | Baker Hughes Incorporated | Bi- or Multi-Modal Particle Size Distribution To Improve Drag Reduction Polymer Dissolution |
MX2007015623A (es) * | 2005-06-14 | 2008-02-21 | Baker Hughes Inc | Distribucion de tamano de particula bi-o multi-modal para mejorar la disolucion de polimero de reduccion de arrastre. |
US7271205B2 (en) * | 2005-09-20 | 2007-09-18 | Baker Hughes Incorporated | Non-cryogenic process for granulating polymer drag reducing agents |
CN101379160B (zh) * | 2006-02-08 | 2012-04-25 | 贝克休斯公司 | 稳定化且凝固保护的聚合物减阻剂悬浮液 |
US8550165B2 (en) | 2010-08-13 | 2013-10-08 | Baker Hughes Incorporated | Well servicing fluid |
RU2481357C1 (ru) | 2011-09-30 | 2013-05-10 | Открытое акционерное общество "Акционерная компания по транспорту нефти "Транснефть" (ОАО "АК "Транснефть") | Способ получения противотурбулентной присадки суспензионного типа, снижающей гидродинамическое сопротивление углеводородных жидкостей |
RU2639301C2 (ru) * | 2015-04-03 | 2017-12-21 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | Противотурбулентные присадки для снижения гидродинамического сопротивления углеводородных жидкостей в трубопроводах и способ их получения |
RU2579588C1 (ru) * | 2015-06-15 | 2016-04-10 | Общество с ограниченной ответственностью "НефтеТрансХим" | Противотурбулентная присадка и способ ее получения |
RU2579583C1 (ru) * | 2015-07-24 | 2016-04-10 | Общество с ограниченной ответственностью "НефтеТрансХим" | Способ получения противотурбулентной присадки и противотурбулентная присадка, полученная на его основе |
RU2590535C1 (ru) * | 2015-09-02 | 2016-07-10 | Общество С Ограниченной Ответственностью "Ника-Петротэк" | Способ получения противотурбулентной присадки на основе полиальфаолефинов (варианты) |
RU2599986C1 (ru) * | 2015-09-07 | 2016-10-20 | Общество С Ограниченной Ответственностью "Ника-Петротэк" | Агент снижения гидродинамического сопротивления и способ его получения |
RU2606975C1 (ru) * | 2015-12-14 | 2017-01-10 | Общество с ограниченной ответственностью "КЕМТЕК" | Способ получения противотурбулентной присадки с рециклом мономера |
RU2670444C1 (ru) * | 2017-06-09 | 2018-10-23 | Публичное акционерное общество "СИБУР Холдинг" | Способ получения антитурбулентной присадки суспензионного типа и антитурбулентная присадка суспензионного типа |
RU2675239C1 (ru) * | 2017-12-12 | 2018-12-18 | Публичное акционерное общество "СИБУР Холдинг" | Способ приготовления стабильной неагломерирующей суспензии и антитурбулентной присадки на ее основе |
US11767487B2 (en) | 2020-07-13 | 2023-09-26 | Baker Hughes Oilfield Operations Llc | Inverting aids for latex-based drag reducing agents |
RU2754173C1 (ru) * | 2020-07-21 | 2021-08-30 | Публичное акционерное общество "Транснефть" (ПАО "Транснефть") | Способ получения противотурбулентных присадок для применения в условиях низких температур транспортируемой среды |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2879173A (en) * | 1956-03-06 | 1959-03-24 | Du Pont | Process for preparing free-flowing pellets of polychloroprene and the resulting product |
US3692676A (en) * | 1969-12-22 | 1972-09-19 | Continental Oil Co | Method of friction loss reduction in oleaginous fluids flowing through conduits |
US3736288A (en) * | 1971-07-09 | 1973-05-29 | Union Carbide Corp | Drag reducing formulations |
US3884252A (en) * | 1973-06-20 | 1975-05-20 | Shell Oil Co | Friction reduction |
US4177177A (en) * | 1976-03-26 | 1979-12-04 | El Aasser Mohamed S | Polymer emulsification process |
US4123403A (en) * | 1977-06-27 | 1978-10-31 | The Dow Chemical Company | Continuous process for preparing aqueous polymer microsuspensions |
US4212312A (en) * | 1978-08-28 | 1980-07-15 | Shell Oil Company | Fragmented polymers as friction reducers in pipeline transportation of products |
US4527581A (en) * | 1981-02-02 | 1985-07-09 | Atlantic Richfield Company | Compositions for and method of reducing hydrocarbon fluid friction loss in conduits |
US4510304A (en) * | 1982-09-30 | 1985-04-09 | General Technology Applications, Inc. | Polymer fractionation |
US4499214A (en) * | 1983-05-03 | 1985-02-12 | Diachem Industries, Inc. | Method of rapidly dissolving polymers in water |
US4584244A (en) * | 1985-05-28 | 1986-04-22 | Conoco Inc. | Preparation of cold flow resistant polymer powders |
US4845178A (en) * | 1985-11-21 | 1989-07-04 | Pony Industries, Inc. | Polymerization process |
US4720397A (en) * | 1985-12-12 | 1988-01-19 | General Technology Applications, Inc. | Rapid dissolving polymer compositions and uses therefor |
US5244937A (en) * | 1990-09-04 | 1993-09-14 | Conoco Inc. | Stable nonagglomerating aqueous suspensions of oil soluble polymeric friction reducers |
US5165440A (en) * | 1991-12-30 | 1992-11-24 | Conoco Inc. | Process and apparatus for blending viscous polymers in solvent |
US5449732A (en) * | 1993-06-18 | 1995-09-12 | Conoco Inc. | Solvent free oil soluble drag reducing polymer suspension |
US5376697B1 (en) * | 1993-06-21 | 1998-06-02 | Conoco Inc | Drag reducers for flowing hydrocarbons |
US5539044A (en) * | 1994-09-02 | 1996-07-23 | Conoco In. | Slurry drag reducer |
-
1995
- 1995-06-29 US US08/496,489 patent/US5733953A/en not_active Expired - Lifetime
-
1996
- 1996-06-14 DE DE69623293T patent/DE69623293T2/de not_active Expired - Fee Related
- 1996-06-14 EP EP96921636A patent/EP0835268B1/en not_active Expired - Lifetime
- 1996-06-14 DK DK96921636T patent/DK0835268T3/da active
- 1996-06-14 AU AU62810/96A patent/AU6281096A/en not_active Abandoned
- 1996-06-14 ES ES96921636T patent/ES2182995T3/es not_active Expired - Lifetime
- 1996-06-14 WO PCT/US1996/010399 patent/WO1997001582A1/en active IP Right Grant
-
1997
- 1997-12-22 NO NO19976031A patent/NO315945B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE69623293D1 (de) | 2002-10-02 |
EP0835268A1 (en) | 1998-04-15 |
NO976031L (no) | 1998-02-13 |
NO315945B1 (no) | 2003-11-17 |
EP0835268B1 (en) | 2002-08-28 |
AU6281096A (en) | 1997-01-30 |
US5733953A (en) | 1998-03-31 |
DE69623293T2 (de) | 2003-11-13 |
DK0835268T3 (da) | 2003-01-06 |
NO976031D0 (no) | 1997-12-22 |
WO1997001582A1 (en) | 1997-01-16 |
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