IN159634B - - Google Patents
Info
- Publication number
- IN159634B IN159634B IN28/MAS/84A IN28MA1984A IN159634B IN 159634 B IN159634 B IN 159634B IN 28MA1984 A IN28MA1984 A IN 28MA1984A IN 159634 B IN159634 B IN 159634B
- Authority
- IN
- India
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
- F25J3/0266—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of carbon dioxide
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- 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
- B01D53/1425—Regeneration of liquid absorbents
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- 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
- B01D53/1456—Removing acid components
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- 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
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- 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
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- 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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/0204—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the feed stream
- F25J3/0209—Natural gas or substitute natural gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/0204—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the feed stream
- F25J3/0223—H2/CO mixtures, i.e. synthesis gas; Water gas or shifted synthesis gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
- F25J3/0233—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of CnHm with 1 carbon atom or more
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
- F25J3/0271—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of H2/CO mixtures, i.e. of synthesis gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/50—Processes or apparatus using other separation and/or other processing means using absorption, i.e. with selective solvents or lean oil, heavier CnHm and including generally a regeneration step for the solvent or lean oil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2220/00—Processes or apparatus involving steps for the removal of impurities
- F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
- F25J2220/66—Separating acid gases, e.g. CO2, SO2, H2S or RSH
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT19177/83A IT1193602B (it) | 1983-01-19 | 1983-01-19 | Procedimento criogenico di rimozione di gas acidi da miscele di gas mediante solvente |
Publications (1)
Publication Number | Publication Date |
---|---|
IN159634B true IN159634B (fr) | 1987-05-30 |
Family
ID=11155539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN28/MAS/84A IN159634B (fr) | 1983-01-19 | 1984-01-18 |
Country Status (18)
Country | Link |
---|---|
US (1) | US4591370A (fr) |
AU (1) | AU2280083A (fr) |
BR (1) | BR8400286A (fr) |
CA (1) | CA1220411A (fr) |
DE (1) | DE3401593A1 (fr) |
ES (1) | ES8506204A1 (fr) |
FR (1) | FR2539322A1 (fr) |
GB (1) | GB2133717B (fr) |
GR (1) | GR81688B (fr) |
IN (1) | IN159634B (fr) |
IT (1) | IT1193602B (fr) |
MT (1) | MTP942B (fr) |
MY (1) | MY101548A (fr) |
NO (1) | NO840156L (fr) |
NZ (1) | NZ206616A (fr) |
OA (1) | OA07635A (fr) |
PL (1) | PL245780A1 (fr) |
YU (1) | YU8984A (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1190357B (it) * | 1985-05-24 | 1988-02-16 | Snam Progetti | Procedimento criogenito di rimozione di gas acidi da miscele di gas mediante solventi |
DE3709363C1 (de) * | 1987-03-21 | 1988-08-18 | Metallgesellschaft Ag | Verfahren zum Behandeln zweier beladener Waschloesungsstroeme |
FR2615184B1 (fr) * | 1987-05-15 | 1989-06-30 | Elf Aquitaine | Procede cryogenique de desulfuration selective et de degazolinage simultanes d'un melange gazeux consistant principalement en methane et renfermant egalement h2s ainsi que des hydrocarbures en c2 et plus |
US5019143A (en) * | 1987-09-23 | 1991-05-28 | Mehrta Yuv R | Low pressure noncryogenic processing for ethylene recovery |
ZA899705B (en) * | 1989-01-26 | 1990-09-26 | Aeci Ltd | Purification of gases |
JPH0418911A (ja) * | 1990-05-14 | 1992-01-23 | Toho Chem Ind Co Ltd | ガスから酸性成分を除去する方法 |
AT394953B (de) * | 1990-07-23 | 1992-08-10 | Schmid Peter J | Verfahren zur abtrennung von schwefelwasserstoff aus gasgemischen |
JP2792777B2 (ja) * | 1992-01-17 | 1998-09-03 | 関西電力株式会社 | 燃焼排ガス中の炭酸ガスの除去方法 |
DE19829389C1 (de) * | 1998-07-01 | 2000-01-05 | Krupp Uhde Gmbh | Verfahren zur Rückgewinnung von Gasen |
US7147691B2 (en) * | 2002-09-27 | 2006-12-12 | 1058238 Alberta Ltd. | Acid gas enrichment process |
CA2405719A1 (fr) * | 2002-09-27 | 2004-03-27 | Gary Palmer | Methode d'enrichissement de gaz acides |
FR2960287A1 (fr) * | 2010-05-20 | 2011-11-25 | Air Liquide | Procede et appareil de separation d'un melange d'hydrogene et de monoxyde de carbone par distillation et/ou lavage cryogenique |
WO2011157268A1 (fr) * | 2010-06-17 | 2011-12-22 | Union Engineering A/S | Procédé et appareil pour la purification de dioxyde de carbone à l'aide de dioxyde de carbone liquide |
EP3666365A1 (fr) * | 2018-12-14 | 2020-06-17 | L'air Liquide, Société Anonyme Pour L'Étude Et L'exploitation Des Procédés Georges Claude | Procédé de régénération d'un détergent chargé à partir d'un lavage à gaz à action physique et dispositif de lavage à gaz à action physique |
EP4245401A1 (fr) * | 2022-03-18 | 2023-09-20 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procédé et installation d'élimination du dioxyde de carbone du gaz de synthèse |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL68945C (fr) * | 1946-11-04 | |||
GB728444A (en) * | 1950-12-09 | 1955-04-20 | Linde Eismasch Ag | Improvements in or relating to drying or purifying natural gases or waste gases fromhydrogenating or cracking processes |
BE520083A (fr) * | 1952-05-21 | |||
US2926753A (en) * | 1958-10-06 | 1960-03-01 | Fluor Corp | Process for carbon dioxide absorption |
DE1567690B2 (de) * | 1965-11-15 | 1974-02-14 | Metallgesellschaft Ag, 6000 Frankfurt | Verfahren zur Herstellung von Wasserstoff aus CO- und H tief 2-reichen, CO tief 2 und Schwefelverbindungen enthaltenden Rohgasen |
GB1196610A (en) * | 1966-10-11 | 1970-07-01 | Lummus Co | Purification of Gases |
US3718006A (en) * | 1968-12-11 | 1973-02-27 | Linde Ag | Process for selective absorption |
IT1056904B (it) * | 1976-03-05 | 1982-02-20 | Snam Progetti | Procedimento per la purificazione di gas naturali ad alto contenuto di gas acidi |
GB1545855A (en) * | 1977-01-31 | 1979-05-16 | Groom H | Machine and guard assembly therefor |
DE2909335A1 (de) * | 1979-03-09 | 1980-09-18 | Linde Ag | Verfahren und vorrichtung zur zerlegung von erdgas |
IT1211081B (it) * | 1981-07-23 | 1989-09-29 | Snam Progetti | Procedimento criogenico di rimozione di gas acidi da misceledi gas. |
MTP913B (en) * | 1981-07-23 | 1984-04-10 | Snam Progetti | Cryogenic process for fracionally removing audie gases from gas mixtures |
-
1983
- 1983-01-19 IT IT19177/83A patent/IT1193602B/it active
- 1983-12-19 NZ NZ206616A patent/NZ206616A/en unknown
- 1983-12-21 GR GR73310A patent/GR81688B/el unknown
- 1983-12-22 AU AU22800/83A patent/AU2280083A/en not_active Abandoned
- 1983-12-27 US US06/565,459 patent/US4591370A/en not_active Expired - Fee Related
- 1983-12-30 MT MT942A patent/MTP942B/xx unknown
-
1984
- 1984-01-04 GB GB08400060A patent/GB2133717B/en not_active Expired
- 1984-01-05 FR FR8400131A patent/FR2539322A1/fr not_active Withdrawn
- 1984-01-05 CA CA000444756A patent/CA1220411A/fr not_active Expired
- 1984-01-17 ES ES529394A patent/ES8506204A1/es not_active Expired
- 1984-01-17 NO NO840156A patent/NO840156L/no unknown
- 1984-01-18 IN IN28/MAS/84A patent/IN159634B/en unknown
- 1984-01-18 PL PL24578084A patent/PL245780A1/xx unknown
- 1984-01-18 OA OA58207A patent/OA07635A/fr unknown
- 1984-01-18 DE DE19843401593 patent/DE3401593A1/de not_active Ceased
- 1984-01-19 YU YU00089/84A patent/YU8984A/xx unknown
- 1984-01-19 BR BR8400286A patent/BR8400286A/pt unknown
-
1987
- 1987-02-17 MY MYPI87000160A patent/MY101548A/en unknown
Also Published As
Publication number | Publication date |
---|---|
NZ206616A (en) | 1986-11-12 |
DE3401593A1 (de) | 1984-07-19 |
OA07635A (fr) | 1985-05-23 |
IT1193602B (it) | 1988-07-21 |
FR2539322A1 (fr) | 1984-07-20 |
GB2133717A (en) | 1984-08-01 |
ES529394A0 (es) | 1985-07-01 |
IT8319177A0 (it) | 1983-01-19 |
MTP942B (en) | 1984-07-16 |
GR81688B (fr) | 1984-12-12 |
YU8984A (en) | 1986-06-30 |
CA1220411A (fr) | 1987-04-14 |
NO840156L (no) | 1984-07-20 |
MY101548A (en) | 1991-12-17 |
ES8506204A1 (es) | 1985-07-01 |
GB8400060D0 (en) | 1984-02-08 |
AU2280083A (en) | 1984-07-26 |
GB2133717B (en) | 1987-02-25 |
PL245780A1 (en) | 1984-08-27 |
BR8400286A (pt) | 1984-08-28 |
US4591370A (en) | 1986-05-27 |