IN171839B - - Google Patents

Info

Publication number
IN171839B
IN171839B IN661/MAS/88A IN661MA1988A IN171839B IN 171839 B IN171839 B IN 171839B IN 661MA1988 A IN661MA1988 A IN 661MA1988A IN 171839 B IN171839 B IN 171839B
Authority
IN
India
Application number
IN661/MAS/88A
Other languages
English (en)
Inventor
R Mehra Yuv
Original Assignee
Advanced Extraction Technol
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22278781&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IN171839(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Advanced Extraction Technol filed Critical Advanced Extraction Technol
Priority to IN73MA1992 priority Critical patent/IN173699B/en
Publication of IN171839B publication Critical patent/IN171839B/en

Links

Classifications

    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1487—Removing organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1493—Selection of liquid materials for use as absorbents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/04—Purification or separation of nitrogen
    • C01B21/0405—Purification or separation processes
    • C01B21/0433—Physical processing only
    • C01B21/0488—Physical processing only by absorption in liquids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/52—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquids; Regeneration of used liquids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/11—Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
    • 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
    • C10G5/00—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas
    • C10G5/04—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas with liquid absorbents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0415—Purification by absorption in liquids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/048—Composition of the impurity the impurity being an organic compound
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/0485—Composition of the impurity the impurity being a sulfur compound
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0068—Organic compounds
    • C01B2210/007—Hydrocarbons
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1025—Natural gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Gas Separation By Absorption (AREA)
IN661/MAS/88A 1987-09-23 1988-09-20 IN171839B (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
IN73MA1992 IN173699B (en]) 1988-09-20 1992-02-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/100,242 US4832718A (en) 1982-05-03 1987-09-23 Processing nitrogen-rich, hydrogen-rich, and olefin-rich gases with physical solvents

Publications (1)

Publication Number Publication Date
IN171839B true IN171839B (en]) 1993-01-23

Family

ID=22278781

Family Applications (1)

Application Number Title Priority Date Filing Date
IN661/MAS/88A IN171839B (en]) 1987-09-23 1988-09-20

Country Status (11)

Country Link
US (1) US4832718A (en])
EP (1) EP0393029B2 (en])
JP (1) JP2607142B2 (en])
CN (1) CN1024322C (en])
AR (1) AR243400A1 (en])
AU (1) AU621293B2 (en])
CA (1) CA1298065C (en])
DE (1) DE3872255T2 (en])
IN (1) IN171839B (en])
SA (1) SA91120206B1 (en])
WO (1) WO1989003009A1 (en])

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5047074A (en) * 1989-01-25 1991-09-10 Macgregor Douglas Purging of nitrogen from natural gas
US5220097A (en) * 1992-02-19 1993-06-15 Advanced Extraction Technologies, Inc. Front-end hydrogenation and absorption process for ethylene recovery
US5326929A (en) * 1992-02-19 1994-07-05 Advanced Extraction Technologies, Inc. Absorption process for hydrogen and ethylene recovery
US5224350A (en) * 1992-05-11 1993-07-06 Advanced Extraction Technologies, Inc. Process for recovering helium from a gas stream
US5321952A (en) * 1992-12-03 1994-06-21 Uop Process for the purification of gases
US5406802A (en) * 1992-12-03 1995-04-18 Uop Process for the purification of gases
US5325672A (en) * 1992-12-03 1994-07-05 Uop Process for the purification of gases
US5462583A (en) * 1994-03-04 1995-10-31 Advanced Extraction Technologies, Inc. Absorption process without external solvent
US5452581A (en) * 1994-04-01 1995-09-26 Dinh; Cong X. Olefin recovery method
US5453559A (en) * 1994-04-01 1995-09-26 The M. W. Kellogg Company Hybrid condensation-absorption olefin recovery
US5689032A (en) * 1994-11-22 1997-11-18 Krause/Pasadyn, A Partnership Method and apparatus for recovery of H2 and C2 and heavier components
US5681908A (en) * 1995-03-03 1997-10-28 Advanced Extraction Technologies, Inc. Absorption process for rejection of reactor byproducts and recovery of monomers from waste gas streams in olefin polymerization processes
US5521264A (en) * 1995-03-03 1996-05-28 Advanced Extraction Technologies, Inc. Gas phase olefin polymerization process with recovery of monomers from reactor vent gas by absorption
US5546764A (en) * 1995-03-03 1996-08-20 Advanced Extraction Technologies, Inc. Absorption process for recovering ethylene and hydrogen from refinery and petrochemical plant off-gases
US5685170A (en) * 1995-11-03 1997-11-11 Mcdermott Engineers & Constructors (Canada) Ltd. Propane recovery process
US5763715A (en) * 1996-10-08 1998-06-09 Stone & Webster Engineering Corp. Butadiene removal system for ethylene plants with front end hydrogenation systems
US5953935A (en) * 1997-11-04 1999-09-21 Mcdermott Engineers & Constructors (Canada) Ltd. Ethane recovery process
IT1308619B1 (it) 1999-02-19 2002-01-09 Eni Spa Procedimento per la rimozione di azoto contenuto nel gas naturale.
ITMI991613A1 (it) * 1999-07-22 2001-01-22 Snam Progetti Procedimento per la separazione di olefine leggere da paraffine
US6698237B2 (en) 2001-12-11 2004-03-02 Advanced Extraction Technologies, Inc. Use of stripping gas in flash regeneration solvent absorption systems
US6740226B2 (en) 2002-01-16 2004-05-25 Saudi Arabian Oil Company Process for increasing hydrogen partial pressure in hydroprocessing processes
US20040003717A1 (en) * 2002-07-05 2004-01-08 Gaskin Thomas K. Use of product gas recycle in processing gases containing light components with physical solvents
US7273542B2 (en) 2003-04-04 2007-09-25 Exxonmobil Chemical Patents Inc. Process and apparatus for recovering olefins
CN101389913A (zh) * 2004-03-11 2009-03-18 先进提取技术有限公司 在利用物理溶剂来处理包含轻质组分的气体中的低温应用
RU2007110820A (ru) * 2004-08-24 2008-10-10 Эдванст Экстрэкшн Текнолоджиз, Инк. (Us) Комбинированное использование внешнего и внутреннего растворителей при обработке газов, содержащих легкие, средние и тяжелые компоненты
US7469542B2 (en) * 2004-11-08 2008-12-30 Kalex, Llc Cascade power system
US7398651B2 (en) * 2004-11-08 2008-07-15 Kalex, Llc Cascade power system
US9017547B2 (en) * 2005-07-20 2015-04-28 Saudi Arabian Oil Company Hydrogen purification for make-up gas in hydroprocessing processes
US8087248B2 (en) * 2008-10-06 2012-01-03 Kalex, Llc Method and apparatus for the utilization of waste heat from gaseous heat sources carrying substantial quantities of dust
US8695344B2 (en) * 2008-10-27 2014-04-15 Kalex, Llc Systems, methods and apparatuses for converting thermal energy into mechanical and electrical power
US8176738B2 (en) 2008-11-20 2012-05-15 Kalex Llc Method and system for converting waste heat from cement plant into a usable form of energy
JP5641601B2 (ja) * 2010-01-27 2014-12-17 株式会社ササクラ アンモニアの回収装置及び回収方法
US10427092B2 (en) 2010-04-05 2019-10-01 Brecor Holdings Llc Light gas separation from hydrocarbons for variable composition feed streams
US8474263B2 (en) 2010-04-21 2013-07-02 Kalex, Llc Heat conversion system simultaneously utilizing two separate heat source stream and method for making and using same
EP2582447A4 (en) * 2010-06-17 2014-01-01 Tomas Aabyhammar PROCESS FOR TREATING GAS CONTAINING SOLVENT
FR2974363B1 (fr) * 2011-04-22 2014-12-19 Michelin Soc Tech Recuperation de monomeres.
CA2854364C (en) 2011-11-04 2020-06-02 Saudi Arabian Oil Company Hydrotreating and aromatic saturation process with integral intermediate hydrogen separation and purification
US9115318B2 (en) 2011-11-04 2015-08-25 Saudi Arabian Oil Company Hydrocracking process with integral intermediate hydrogen separation and purification
US8833077B2 (en) 2012-05-18 2014-09-16 Kalex, Llc Systems and methods for low temperature heat sources with relatively high temperature cooling media
US9850142B2 (en) * 2013-03-13 2017-12-26 Tianhua Institute Of Chemical Machinery And Automation Co., Ltd. Method and device for recycling and purifying water vapor from coal drying process
FR3018204B1 (fr) * 2014-03-05 2017-11-17 Herakles Procede de traitement de gaz effluent contenant des hydrocarbures aromatiques polycycliques
US20170152447A1 (en) * 2014-07-08 2017-06-01 Sabic Global Technologies B.V. Process for producing btx and lpg
US10787402B2 (en) 2016-04-15 2020-09-29 Sabic Global Technologies B.V. Separation of off gases from C3 hydrocarbons in propane dehydrogenation process
CN105771560A (zh) * 2016-04-27 2016-07-20 西安科技大学 一种低浓度甲烷的煤层气精过滤系统
WO2018136628A1 (en) * 2017-01-19 2018-07-26 Larry Baxter Method and apparatus for continuous removal of vapors from gases
CN109678639A (zh) * 2017-10-19 2019-04-26 中国石油化工股份有限公司 一种甲烷氧化偶联制乙烯反应气体的分离方法和装置
CN110006216B (zh) * 2019-03-29 2020-01-24 大连理工大学 一种深冷与膜耦合的乙烯循环制冷系统不凝排放气分离回收工艺
CN115999328B (zh) * 2021-10-22 2025-03-28 中国石油化工股份有限公司 膜分离结合精馏制备乙烯的方法和系统

Family Cites Families (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1934029A (en) * 1928-10-23 1933-11-07 Standard Oil Dev Co Process for treating gaseous mixtures
US1786521A (en) * 1928-11-06 1930-12-30 Dermody Michael Latch
US2282549A (en) * 1931-11-25 1942-05-12 Standard Oil Co Polymerization of hydrocarbon gases
US2226467A (en) * 1936-05-07 1940-12-24 Gulf Oil Corp Utilization of petroleum refinery gas
US2241716A (en) * 1937-06-15 1941-05-13 Polymerization Process Corp Conversion of hydrocarbons
US2187631A (en) * 1937-06-25 1940-01-16 American Locomotive Co Method of refining hydrocarbons
US2308856A (en) * 1939-04-28 1943-01-19 Cities Service Oil Co Recovery and conversion of olefinic hydrocarbons
US2301548A (en) * 1940-02-05 1942-11-10 Winkler Koch Patent Company Petroleum conversion process
US2325379A (en) * 1942-05-26 1943-07-27 Shell Dev Distillation process
US2433286A (en) * 1943-09-22 1947-12-23 Union Oil Co Extractive distillation of hydrocarbon mixtures using hydrocarbon solvents
US2455803A (en) * 1944-02-11 1948-12-07 Shell Dev Extractive distillation process
US2511206A (en) * 1945-12-08 1950-06-13 Tennessee Eastman Corp Process of producing hydrocarbons
US2504429A (en) * 1946-04-18 1950-04-18 Phillips Petroleum Co Recovery of hydrocarbons from natural gas
US2596785A (en) * 1946-07-08 1952-05-13 Pritchard & Co J F Method of enriching natural gas
US2573341A (en) * 1946-12-19 1951-10-30 Lummus Co Production of ethylene
US2516507A (en) * 1947-03-29 1950-07-25 Shell Dev Absorption separation process for hydrocarbons
US2610704A (en) * 1947-07-03 1952-09-16 Standard Oil Dev Co Separation of ethane and ethylene by extractive distillation
US2588323A (en) * 1949-09-03 1952-03-04 Lummus Co Production of ethylene
US2675095A (en) * 1951-11-28 1954-04-13 Lummus Co Process of absorbing hydrocarbons from gaseous mixture
US2765635A (en) * 1952-08-07 1956-10-09 Gulf Oil Corp Process for separation of gases
US2780580A (en) * 1953-03-04 1957-02-05 Lummus Co Production of ethylene
US2745889A (en) * 1953-06-22 1956-05-15 Exxon Research Engineering Co Separation of c2, c3 and c4 alkenes from highly cracked distillates
US2813920A (en) * 1953-07-03 1957-11-19 Phillips Petroleum Co Production of ethylene
US2849371A (en) * 1954-09-27 1958-08-26 Phillips Petroleum Co Separation and recovery of hydrocarbons from gaseous mixtures thereof
US2804488A (en) * 1954-12-27 1957-08-27 Phillips Petroleum Co Separation and recovery of ethylene
US2908625A (en) * 1955-01-17 1959-10-13 Lummus Co Olefin production process
US2887850A (en) * 1955-12-19 1959-05-26 Phillips Petroleum Co Methane separated from hydrogen using ethane as an absorbent
US2938865A (en) * 1956-12-26 1960-05-31 Phillips Petroleum Co Separation column control
US2868326A (en) * 1957-03-11 1959-01-13 Phillips Petroleum Co Recovery of hydrocarbons from gases
US2959540A (en) * 1958-12-02 1960-11-08 Exxon Research Engineering Co Light ends absorption system
FR1329645A (fr) * 1962-04-19 1963-06-14 Air Liquide Procédé de purification de l'hydrogène
US3187064A (en) * 1962-05-09 1965-06-01 Foster Wheeler Corp Ethylene recovery system
US3213151A (en) * 1962-07-27 1965-10-19 Phillips Petroleum Co Recovery of hydrogen from gaseous mixtures and improved hydrogenation process
US3291849A (en) * 1964-11-16 1966-12-13 Hydrocarbon Research Inc Hydrodealkylation
US3349145A (en) * 1965-08-26 1967-10-24 Universal Oil Prod Co Hydrodealkylation process using impure make-up hydrogen
US3383838A (en) * 1966-06-29 1968-05-21 Universal Oil Prod Co Hydrogen purification process
US3555837A (en) * 1968-02-01 1971-01-19 Phillips Petroleum Co Temperature control of fluid separation systems
US3574089A (en) * 1969-01-27 1971-04-06 Universal Oil Prod Co Gas separation from hydrogen containing hydrocarbon effluent
US4009097A (en) * 1974-03-21 1977-02-22 Uop Inc. Separation process
US4072604A (en) * 1974-03-21 1978-02-07 Uop Inc. Process to separate hydrocarbons from gas streams
AT371919B (de) * 1980-09-11 1983-08-10 Linde Ag Verfahren zur anreicherung niedermolekularer olefine durch waschung
US4692179A (en) * 1982-05-03 1987-09-08 Advanced Extraction Technologies, Inc. Process for using alkyl substituted C8-C10 aromatic hydrocarbons as preferential physical solvents for selective processing of hydrocarbon gas streams
US4743282A (en) * 1982-05-03 1988-05-10 Advanced Extraction Technologies, Inc. Selective processing of gases containing olefins by the mehra process
US4623371A (en) * 1984-08-03 1986-11-18 El Paso Hydrocarbons Company Utilizing the Mehra process for processing and BTU upgrading of nitrogen-rich natural gas streams
US4479812A (en) * 1983-06-29 1984-10-30 Mobil Oil Corporation Sorption fractionation system for olefin separation
US4552572A (en) * 1983-07-26 1985-11-12 Bechtel International Corporation Process for desulfurization of fuel gas
US4680042A (en) * 1985-12-13 1987-07-14 Advanced Extraction Technologies, Inc. Extractive stripping of inert-rich hydrocarbon gases with a preferential physical solvent
US4696688A (en) * 1985-12-13 1987-09-29 Advanced Extraction Technologies, Inc. Conversion of lean oil absorption process to extraction process for conditioning natural gas

Also Published As

Publication number Publication date
EP0393029B2 (en) 1996-04-10
AU621293B2 (en) 1992-03-12
EP0393029B1 (en) 1992-06-17
JP2607142B2 (ja) 1997-05-07
DE3872255T2 (de) 1996-10-24
AR243400A1 (es) 1993-08-31
SA91120206B1 (ar) 2005-12-13
CA1298065C (en) 1992-03-31
CN1024322C (zh) 1994-04-27
EP0393029A1 (en) 1990-10-24
CN1035440A (zh) 1989-09-13
EP0393029A4 (en) 1991-01-16
DE3872255D1 (de) 1992-07-23
AU1545488A (en) 1989-04-18
JPH03501352A (ja) 1991-03-28
US4832718A (en) 1989-05-23
WO1989003009A1 (en) 1989-04-06

Similar Documents

Publication Publication Date Title
AU5648086A (en])
AU5724686A (en])
AU5977686A (en])
AU6965487A (en])
AU7212287A (en])
BG44568A1 (en])
BG44589A1 (en])
BG44605A1 (en])
BG44639A1 (en])
BG44665A1 (en])
BG44666A1 (en])
BG44680A1 (en])
BG44687A1 (en])
BG44689A1 (en])
BG44699A1 (en])
BG44715A1 (en])
BG44721A1 (en])
BG44747A1 (en])
BG44770A1 (en])
BG44777A1 (en])
BG44812A1 (en])
BG44814A1 (en])
BG44816A1 (en])
BG44820A1 (en])
BG44853A1 (en])