ES2050448T3 - Procedimiento para la descontaminacion in situ de un suelo subsuperficial y de aguas subterraneas. - Google Patents
Procedimiento para la descontaminacion in situ de un suelo subsuperficial y de aguas subterraneas.Info
- Publication number
- ES2050448T3 ES2050448T3 ES90912200T ES90912200T ES2050448T3 ES 2050448 T3 ES2050448 T3 ES 2050448T3 ES 90912200 T ES90912200 T ES 90912200T ES 90912200 T ES90912200 T ES 90912200T ES 2050448 T3 ES2050448 T3 ES 2050448T3
- Authority
- ES
- Spain
- Prior art keywords
- sub
- injection
- decontamination
- situ
- steam
- 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
- 238000005202 decontamination Methods 0.000 title abstract 2
- 230000003588 decontaminative effect Effects 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000002689 soil Substances 0.000 title abstract 2
- 238000002347 injection Methods 0.000 abstract 3
- 239000007924 injection Substances 0.000 abstract 3
- 238000010793 Steam injection (oil industry) Methods 0.000 abstract 2
- 238000011109 contamination Methods 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/11—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/005—Extraction of vapours or gases using vacuum or venting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Agronomy & Crop Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
SE PROPORCIONA UN METODO PARA LA DESCONTAMINACION IN SITU DE UN AREA SUBSUPERFICIAL CONTAMINADA POR MEDIO DE LA INYECCION DE VAPOR EN LOS POZOS DE INYECCION (40A, 40B) Y SACANDO LIQUIDOS Y VAPORES DE LOS POZOS DE INYECCION (41) POR DEBAJO DE LA PRESION SUBATMOSFERICA, POR LO CUAL EL VAPOR SE PASA A TRAVES DEL AREA CONTAMINADA EN UNA DIRECCION ESENCIALMENTE HORIZONTAL. DESPUES QUE UNA PORCION SUBSTANCIAL DE LA CONTAMINACION (42, 44, 45) HA SIDO RETIRADA DE ESTA FORMA, SE PARA LA INYECCION DE VAPOR, PERO SE CONTINUA CON LA EXTRACCION A PRESION SUBATMOSFERICA PARA VOLATILIZAR Y RETIRAR EL AGUA RESIDUAL Y LOS CONTAMINANTES ATRAPADOS EN LOS POROS DEL SUELO. LA INYECCION DE VAPOR PUEDE SER PERIODICAMENTE REANUDADA PARA RECALENTAR EL AREA Y RELLENAR DE AGUA LOS POROS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/394,739 US5018576A (en) | 1989-08-16 | 1989-08-16 | Process for in situ decontamination of subsurface soil and groundwater |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2050448T3 true ES2050448T3 (es) | 1994-05-16 |
Family
ID=23560225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90912200T Expired - Lifetime ES2050448T3 (es) | 1989-08-16 | 1990-08-15 | Procedimiento para la descontaminacion in situ de un suelo subsuperficial y de aguas subterraneas. |
Country Status (10)
Country | Link |
---|---|
US (1) | US5018576A (es) |
EP (1) | EP0438568B1 (es) |
JP (1) | JP2660307B2 (es) |
AT (1) | ATE99757T1 (es) |
AU (1) | AU624567B2 (es) |
CA (1) | CA2039148C (es) |
DE (1) | DE69005809T2 (es) |
DK (1) | DK0438568T3 (es) |
ES (1) | ES2050448T3 (es) |
WO (1) | WO1991002849A1 (es) |
Families Citing this family (85)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5197541A (en) * | 1989-09-27 | 1993-03-30 | Xerox Corporation | Apparatus for two phase vacuum extraction of soil contaminants |
US5152341A (en) * | 1990-03-09 | 1992-10-06 | Raymond S. Kasevich | Electromagnetic method and apparatus for the decontamination of hazardous material-containing volumes |
US5115866A (en) * | 1991-01-18 | 1992-05-26 | K N Energy, Inc. | Soil vapor well construction |
US5172764A (en) * | 1991-02-07 | 1992-12-22 | Xerox Corporation | Process and apparatus for groundwater extraction using a high vacuum process |
US5664911A (en) | 1991-05-03 | 1997-09-09 | Iit Research Institute | Method and apparatus for in situ decontamination of a site contaminated with a volatile material |
AU621534B3 (en) * | 1991-09-03 | 1992-01-28 | Hrubetz Environmental Services, Inc | In situ soil decontamination method and apparatus |
US5341877A (en) * | 1991-09-12 | 1994-08-30 | General Motors Corporation | Method and apparatus for in situ removal of a spilled fluid from the earth's subsurface |
US5213445A (en) * | 1991-09-26 | 1993-05-25 | Ikenberry Maynard D | System for heated air extraction of contaminants from soil stack |
US5249888A (en) * | 1991-12-20 | 1993-10-05 | Hughes Aircraft Company | Enhanced gradient soil and groundwater remediation method |
CA2084227A1 (en) * | 1991-12-20 | 1993-06-21 | John F. Dablow, Iii | Recoverable extraction and injection probe for enhanced gradient remediation |
US5279740A (en) * | 1992-01-14 | 1994-01-18 | At&T Bell Laboratories | Ground contamination remediation process |
US6217767B1 (en) * | 1992-02-03 | 2001-04-17 | Clark Environmental Services | Vacuum sparging process for treating contaminated groundwater and/or wastewater |
US5265674A (en) * | 1992-02-20 | 1993-11-30 | Battelle Memorial Institute | Enhancement of in situ microbial remediation of aquifers |
JPH0786301B2 (ja) * | 1992-02-21 | 1995-09-20 | 君津市 | 地質汚染状況の検出方法及び汚染物質の除去方法 |
US5391020A (en) * | 1992-05-06 | 1995-02-21 | Sdvc, Inc. | Method for removing a substance from a medium |
US5345034A (en) * | 1993-02-03 | 1994-09-06 | The United States Of America As Represented By The United States Department Of Energy | Containment of subsurface contaminants |
HU214838B (hu) * | 1993-02-24 | 1998-06-29 | Wacker-Chemie Gmbh. | Eljárás talajszennyezők mikrobiológiai lebontásának fokozására |
US5358357A (en) * | 1993-04-30 | 1994-10-25 | Xerox Corporation | Process and apparatus for high vacuum groundwater extraction |
US5464309A (en) * | 1993-04-30 | 1995-11-07 | Xerox Corporation | Dual wall multi-extraction tube recovery well |
US5449251A (en) * | 1993-05-04 | 1995-09-12 | The Regents Of The University Of California | Dynamic underground stripping: steam and electric heating for in situ decontamination of soils and groundwater |
US5360067A (en) * | 1993-05-17 | 1994-11-01 | Meo Iii Dominic | Vapor-extraction system for removing hydrocarbons from soil |
US5383747A (en) * | 1993-08-23 | 1995-01-24 | International Technology Corporation | System for treating a subterranean formation having an aquifer contaminated with organics |
US5400858A (en) * | 1993-09-13 | 1995-03-28 | International Technology Corporation | Groundwater recovery system |
US5518626A (en) * | 1993-12-23 | 1996-05-21 | United Technologies Corporation | Process employing thermally sterilizable aqueous polishing agents |
US5525237A (en) * | 1993-12-23 | 1996-06-11 | United Technologies Corporation | Process for removing free and dissolved CO2 from aqueous solutions |
US5753109A (en) * | 1994-01-25 | 1998-05-19 | The United States Of America As Represented By The United States Department Of Energy | Apparatus and method for phosphate-accelerated bioremediation |
US5480549A (en) * | 1994-01-25 | 1996-01-02 | The United States Of America As Represented By The United States Department Of Energy | Method for phosphate-accelerated bioremediation |
US5709505A (en) * | 1994-04-29 | 1998-01-20 | Xerox Corporation | Vertical isolation system for two-phase vacuum extraction of soil and groundwater contaminants |
JP3786987B2 (ja) * | 1994-04-29 | 2006-06-21 | ゼロックス コーポレイション | 汚染物質除去方法及び装置 |
DE4418125C1 (de) * | 1994-05-24 | 1995-11-09 | Flowtex Technologie Import Von | Verfahren zum Dekontaminieren von mit Schadstoffen belasteten Böden und Vorrichtung zur Durchführung des Verfahrens |
US5558463A (en) * | 1995-03-21 | 1996-09-24 | Geisel; Donald J. | Soil remediation apparatus and method |
US6383388B1 (en) | 1995-08-08 | 2002-05-07 | The Regents Of The University Of California | Water treatment process and system for metals removal using Saccharomyces cerevisiae |
US5688335A (en) * | 1995-09-05 | 1997-11-18 | General Electric Company | Contaminant removal from material |
US6024513A (en) * | 1996-11-14 | 2000-02-15 | American Technologies Inc | Aerobic landfill bioreactor |
US5829519A (en) * | 1997-03-10 | 1998-11-03 | Enhanced Energy, Inc. | Subterranean antenna cooling system |
US5829528A (en) * | 1997-03-31 | 1998-11-03 | Enhanced Energy, Inc. | Ignition suppression system for down hole antennas |
US6007274A (en) * | 1997-05-19 | 1999-12-28 | Arcadis Geraghty & Miller | In-well air stripping, oxidation, and adsorption |
US6142706A (en) * | 1998-05-13 | 2000-11-07 | The Regents Of The University Of California | Thermal treatment wall |
AU2844700A (en) * | 1998-12-17 | 2000-07-03 | Edison International Inc. | Ground water decontamination using lower-side thermal barrier |
US6276873B1 (en) * | 1999-01-29 | 2001-08-21 | Southern California Edison Company | Ground water remediation control process |
US6183162B1 (en) * | 1999-01-29 | 2001-02-06 | Southern California Edison | Method for treating vapors and liquids recovered from a subsurface remediation process |
US6312190B1 (en) * | 1999-04-20 | 2001-11-06 | R. Robert Goughnour | Method and apparatus for enhancement of prefabricated composite vertical drains |
WO2001040583A1 (en) * | 1999-12-06 | 2001-06-07 | Bechtel Bwxt Idaho, Llc | Advanced containment system |
US6758634B2 (en) * | 2001-02-06 | 2004-07-06 | Bechtel Bwxt Idaho, Llc | Subsurface materials management and containment system |
US7056063B2 (en) * | 2000-12-04 | 2006-06-06 | Battelle Energy Alliance, Llc | Apparatus for indication of at least one subsurface barrier characteristic |
US7153061B2 (en) * | 2000-12-04 | 2006-12-26 | Battelle Energy Alliance, Llc | Method of in situ retrieval of contaminants or other substances using a barrier system and leaching solutions |
US6910829B2 (en) * | 2000-12-04 | 2005-06-28 | Battelle Energy Alliance, Llc | In situ retreival of contaminants or other substances using a barrier system and leaching solutions and components, processes and methods relating thereto |
JP4636679B2 (ja) * | 2000-12-28 | 2011-02-23 | 大阪瓦斯株式会社 | 土壌浄化方法 |
US20020162805A1 (en) * | 2001-02-27 | 2002-11-07 | Shenoi Noel A. | Removing contaminants from groundwater |
JP2002292361A (ja) * | 2001-03-30 | 2002-10-08 | Onoda Chemico Co Ltd | 汚染土壌の浄化方法 |
US6746605B2 (en) * | 2001-06-06 | 2004-06-08 | Remediation Technoliges, Inc. | Multi-arrayed vacuum recovery method and system for groundwater wells |
US6740238B2 (en) * | 2001-06-06 | 2004-05-25 | Remediation Technologies, Inc. | Enhanced dissolved oxygen groundwater remediation method and system |
CA2351148C (en) * | 2001-06-21 | 2008-07-29 | John Nenniger | Method and apparatus for stimulating heavy oil production |
US6652893B2 (en) | 2001-07-09 | 2003-11-25 | William Berson | Machine and process for aerating and flavoring water |
US6708763B2 (en) * | 2002-03-13 | 2004-03-23 | Weatherford/Lamb, Inc. | Method and apparatus for injecting steam into a geological formation |
US7866920B2 (en) * | 2002-12-05 | 2011-01-11 | Meco Environmental, Llc | Methods and systems for remediating contaminated soil |
US7486248B2 (en) * | 2003-07-14 | 2009-02-03 | Integrity Development, Inc. | Microwave demulsification of hydrocarbon emulsion |
US7175366B2 (en) * | 2004-11-02 | 2007-02-13 | Geisel Donald J | Device, system, and method for remediation of contaminated soil |
US20080000819A1 (en) * | 2006-02-15 | 2008-01-03 | Liquid Separation Technologies And Equipment, Llc | Water decontamination systems |
US20080000839A1 (en) * | 2006-02-15 | 2008-01-03 | Liquid Separation Technologies And Equipment, Llc | Methods of water decontamination |
US20080000821A1 (en) * | 2006-02-15 | 2008-01-03 | Liquid Separation Technologies And Equipment, Llc | Apparatus for water decontamination |
JP4672582B2 (ja) * | 2006-03-23 | 2011-04-20 | Jx日鉱日石エネルギー株式会社 | 油汚染土壌の原位置での油回収方法 |
CA2549614C (en) * | 2006-06-07 | 2014-11-25 | N-Solv Corporation | Methods and apparatuses for sagd hydrocarbon production |
CA2552482C (en) * | 2006-07-19 | 2015-02-24 | N-Solv Corporation | Methods and apparatuses for enhanced in situ hydrocarbon production |
US8101089B2 (en) | 2007-08-15 | 2012-01-24 | Liquid Separation Technologies And Equipment, Llc | Apparatus for aeration of contaminated liquids |
US20090080979A1 (en) * | 2007-09-21 | 2009-03-26 | Fruits & Associates, Inc. | System and method for decontaminating soil and groundwater |
US8231305B2 (en) * | 2007-09-28 | 2012-07-31 | Lundy William L | Remediation of contaminants from in-situ and ex-situ media |
WO2010088632A2 (en) | 2009-02-02 | 2010-08-05 | Glasspoint Solar, Inc. | Concentrating solar power with glasshouses |
JP5533036B2 (ja) * | 2010-03-02 | 2014-06-25 | 株式会社大林組 | 土壌加温システム |
WO2012128877A2 (en) | 2011-02-22 | 2012-09-27 | Glasspoint Solar, Inc. | Concentrating solar power with glasshouses |
WO2012006288A2 (en) * | 2010-07-05 | 2012-01-12 | Glasspoint Solar, Inc. | Subsurface thermal energy storage of heat generated by concentrating solar power |
EP2707154B1 (en) | 2011-05-11 | 2017-03-08 | William L. Lundy | In-situ subsurface decontamination |
US9200799B2 (en) | 2013-01-07 | 2015-12-01 | Glasspoint Solar, Inc. | Systems and methods for selectively producing steam from solar collectors and heaters for processes including enhanced oil recovery |
US9670760B2 (en) | 2013-10-30 | 2017-06-06 | Chevron U.S.A. Inc. | Process for in situ upgrading of a heavy hydrocarbon using asphaltene precipitant additives |
CN107003033A (zh) | 2014-10-23 | 2017-08-01 | 玻点太阳能有限公司 | 用于太阳能蒸汽发生的蓄热装置及相关的系统和方法 |
AU2016315806A1 (en) | 2015-09-01 | 2018-04-12 | Glasspoint Solar, Inc. | Variable rate steam injection, including via solar power for enhanced oil recovery, and associated systems and methods |
DE102015121042A1 (de) * | 2015-12-03 | 2017-06-08 | Benjamin Klock | Verfahren und Vorrichtung zur in-situ Sanierung verunreinigter Böden |
CN108603656A (zh) | 2016-02-01 | 2018-09-28 | 玻点太阳能有限公司 | 针对提高石油采收率的用于长距离输送质量受控的太阳能生成的蒸汽的分离器和混合器,以及相关的系统及方法 |
US10675664B2 (en) | 2018-01-19 | 2020-06-09 | Trs Group, Inc. | PFAS remediation method and system |
US10201042B1 (en) | 2018-01-19 | 2019-02-05 | Trs Group, Inc. | Flexible helical heater |
US10975291B2 (en) | 2018-02-07 | 2021-04-13 | Chevron U.S.A. Inc. | Method of selection of asphaltene precipitant additives and process for subsurface upgrading therewith |
FR3100142B1 (fr) | 2019-08-28 | 2021-11-05 | Rmv Equipement | Dispositif d’extraction et de décontamination de substances organiques et/ou inorganiques à partir de matières solides ou semi-solides sous le contrôle de plusieurs paramètres |
US11979950B2 (en) | 2020-02-18 | 2024-05-07 | Trs Group, Inc. | Heater for contaminant remediation |
US11642709B1 (en) | 2021-03-04 | 2023-05-09 | Trs Group, Inc. | Optimized flux ERH electrode |
SE2150941A1 (sv) * | 2021-07-14 | 2022-12-20 | La Macch Fts Ab | Metod och kit för bekämpning av invasiva och oönskade växter |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3796262A (en) * | 1971-12-09 | 1974-03-12 | Texaco Inc | Method for recovering oil from subterranean reservoirs |
US4288174A (en) * | 1979-09-10 | 1981-09-08 | Laws Awbrey C | System for groundwater flow control |
US4323122A (en) * | 1980-06-02 | 1982-04-06 | Knopik Dwayne L | Process for recovering organic liquids from underground areas |
US4401569A (en) * | 1981-07-09 | 1983-08-30 | Groundwater Decontamination Systems, Inc. | Method and apparatus for treating hydrocarbon and halogenated hydrocarbon contaminated ground and ground water |
US4597443A (en) * | 1981-11-12 | 1986-07-01 | Mobile Oil Corporation | Viscous oil recovery method |
US4660639A (en) * | 1984-01-04 | 1987-04-28 | The Upjohn Company | Removal of volatile contaminants from the vadose zone of contaminated ground |
US4593760A (en) * | 1984-01-04 | 1986-06-10 | The Upjohn Company | Removal of volatile contaminants from the vadose zone of contaminated ground |
US4526692A (en) * | 1984-01-13 | 1985-07-02 | Yohe Thomas L | Process for purification of contaminated groundwater |
US4608163A (en) * | 1984-01-13 | 1986-08-26 | Yohe Thomas L | Apparatus for purification of contaminated groundwater |
US4761225A (en) * | 1986-08-18 | 1988-08-02 | Breslin Michael K | Apparatus for controlling the removal of liquid hydrocarbons from groundwater |
US4730672A (en) * | 1987-03-04 | 1988-03-15 | Midwest Water Resource, Inc. | Method of removing and controlling volatile contaminants from the vadose layer of contaminated earth |
US4838079A (en) * | 1987-05-20 | 1989-06-13 | Harris Richard K | Multi-channel pipe for monitoring groundwater |
US4765902A (en) * | 1987-09-25 | 1988-08-23 | Chevron Research Company | Process for in situ biodegradation of hydrocarbon contaminated soil |
US4842448A (en) * | 1987-11-12 | 1989-06-27 | Drexel University | Method of removing contaminants from contaminated soil in situ |
US4832122A (en) * | 1988-08-25 | 1989-05-23 | The United States Of America As Represented By The United States Department Of Energy | In-situ remediation system and method for contaminated groundwater |
US4848460A (en) * | 1988-11-04 | 1989-07-18 | Western Research Institute | Contained recovery of oily waste |
-
1989
- 1989-08-16 US US07/394,739 patent/US5018576A/en not_active Expired - Lifetime
-
1990
- 1990-08-15 DK DK90912200.4T patent/DK0438568T3/da active
- 1990-08-15 JP JP2511656A patent/JP2660307B2/ja not_active Expired - Lifetime
- 1990-08-15 AT AT90912200T patent/ATE99757T1/de not_active IP Right Cessation
- 1990-08-15 DE DE69005809T patent/DE69005809T2/de not_active Expired - Fee Related
- 1990-08-15 ES ES90912200T patent/ES2050448T3/es not_active Expired - Lifetime
- 1990-08-15 EP EP90912200A patent/EP0438568B1/en not_active Expired - Lifetime
- 1990-08-15 WO PCT/US1990/004477 patent/WO1991002849A1/en active IP Right Grant
- 1990-08-15 AU AU61758/90A patent/AU624567B2/en not_active Ceased
- 1990-08-15 CA CA002039148A patent/CA2039148C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0438568A4 (en) | 1992-01-08 |
EP0438568B1 (en) | 1994-01-05 |
DE69005809D1 (de) | 1994-02-17 |
JPH04501231A (ja) | 1992-03-05 |
WO1991002849A1 (en) | 1991-03-07 |
CA2039148A1 (en) | 1991-02-17 |
DK0438568T3 (da) | 1994-05-16 |
CA2039148C (en) | 2001-01-23 |
EP0438568A1 (en) | 1991-07-31 |
AU6175890A (en) | 1991-04-03 |
DE69005809T2 (de) | 1994-07-14 |
AU624567B2 (en) | 1992-06-11 |
ATE99757T1 (de) | 1994-01-15 |
JP2660307B2 (ja) | 1997-10-08 |
US5018576A (en) | 1991-05-28 |
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