WO1990015011A1 - Method and device for carbonating and cooling a liquid - Google Patents
Method and device for carbonating and cooling a liquid Download PDFInfo
- Publication number
- WO1990015011A1 WO1990015011A1 PCT/SE1990/000371 SE9000371W WO9015011A1 WO 1990015011 A1 WO1990015011 A1 WO 1990015011A1 SE 9000371 W SE9000371 W SE 9000371W WO 9015011 A1 WO9015011 A1 WO 9015011A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- carbon dioxide
- vessel
- cooling
- conduit
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/04—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
- A23G9/04—Production of frozen sweets, e.g. ice-cream
- A23G9/06—Production of frozen sweets, e.g. ice-cream characterised by using carbon dioxide or carbon dioxide snow or other cryogenic agents as cooling medium
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/36—Freezing; Subsequent thawing; Cooling
- A23L3/37—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals
- A23L3/375—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals with direct contact between the food and the chemical, e.g. liquid nitrogen, at cryogenic temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/236—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids specially adapted for aerating or carbonating beverages
- B01F23/2362—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids specially adapted for aerating or carbonating beverages for aerating or carbonating within receptacles or tanks, e.g. distribution machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/0042—Details of specific parts of the dispensers
- B67D1/0057—Carbonators
- B67D1/0069—Details
- B67D1/0071—Carbonating by injecting CO2 in the liquid
- B67D1/0072—Carbonating by injecting CO2 in the liquid through a diffuser, a bubbler
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/0857—Cooling arrangements
- B67D1/0858—Cooling arrangements using compression systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/98—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S261/00—Gas and liquid contact apparatus
- Y10S261/07—Carbonators
Definitions
- the present invention concerns a method for carbonating and cooling a liquid, particularly a beverage, wherein carbon dioxide under high pressure is introduced under the liquid surface and is allowed to expand and dissolve in the liquid.
- the invention also concerns a device for carrying out this method, said device including a closed vessel, a liquid inlet opening into the vessel, a carbon dioxide inlet opening into the vessel under the surface of the liquid, a discharge conduit for carbonated liquid, and, leading from the vessel above the liquid surface a re-circulation conduit for carbon dioxide not dissolved in the liquid.
- US-A-4 022 119 describes a method and a device for simultaneous carbonating and cooling of a liquid using expanding carbon dioxide.
- the carbon dioxide is kept stored in a tank from which it is introduced at the bottom of an upwardly open carbonating vessel, into which is also successively introduced the liquid to be carbonated.
- the carbonated liquid flows over the edge of the upwardly open carbonating vessel and down into a surrounding vessel from the bottom of which the carbonated liquid is conducted further to be drawn into containers for consumption.
- the cooling with expanding carbon dioxide has as its only object to make possible dissolution of larger amounts of carbon dioxide than otherwise would be possible.
- the object of the present invention is to provide a new method and a new device for carbonating and cooling of liquids, said device working with only one circuit, which makes the device more simple and cheap.
- the device shall be suitable for preparing cooled carbonated beverages in households, in offices and the like where a fast and effectively working device requiring little space is demanded.
- a feeding conduit 2 for liquid such as water
- a high pressure conduit 3 for introducing carbon dioxide in the liquid
- a refill conduit 4 for carbon dioxide
- a discharge conduit 5 for carbonated liquid.
- a re-circulation conduit 6 for carbon dioxide.
- the re-circulation conduit 6 is. connected to a compressor 7 the output side of which is connected to the high pressure conduit 3 through a cooler 8.
- the undissolved carbon dioxide located in the volume 10, possibly through a humidity regulator 11, is re-circulated through the re-circulation conduit 6 to the container 1.
- this takes place through the compressor 7 which shall be capable to achieve a substantial rise of the pressure in the carbon dioxide from a pressure of about 0,7 - 1 MPa preferably to a pressure of about 6,5 MPa or more, such that the carbon dioxide is transferred to liquid phase.
- the temperature of the carbon dioxide is considerably raised (up to about 250°C) . Therefore, it is suitable to divide the compression in two steps by means of a two step compressor with intervening cooling.
- the carbon dioxide which is hot after compression, is cooled in the cooler 8, whereafter the carbon dioxide, preferably in liquid state, is introduced through the conduit 6 and a restriction nozzle 12 into the volume 9 of liquid and is there allowed to expand and transform into steam phase.
- the lowering of temperature resulting from the expansion in the restriction nozzle 12 is used for cooling the liquid simultaneously as the gaseous carbon dioxide on its way up towards the liquid surface partly dissolves in the liquid and carbonates it.
- a device according to the present invention used for carbonating and cooling bererages i.e., as a lemonade machine, provides substantial advantages compared to such devices having separate carbonating and cooling circuits.
- Tests have been performed applicating the method stated and utilizing a test device using liquid carbon dioxide from a bottle.
- the carbon dioxide had a temperature of about +20°C and was injected into a water volume of 3 litres which also had a temperature of about +20°C.
- a carbon dioxide flow of about 100 g/min a lowering of temperature in the water volume of 6,3°C/lmin was obtained which corresponds to a cooling effect of -0,53°C per 20 cl and second.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Food Science & Technology (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Alcoholic Beverages (AREA)
- Carbon And Carbon Compounds (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Devices For Dispensing Beverages (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002056624A CA2056624A1 (en) | 1989-05-31 | 1990-05-30 | Method and device for carbonating and cooling a liquid |
EP90909209A EP0474758B1 (en) | 1989-05-31 | 1990-05-30 | Method and device for carbonating and cooling a liquid |
KR1019910701729A KR920701034A (en) | 1989-05-31 | 1990-05-30 | Carbonation and cooling method of liquids and apparatus |
BR909007408A BR9007408A (en) | 1989-05-31 | 1990-05-30 | PROCESS AND DEVICE FOR SIMULTANEOUS CARBONATING AND COOLING OF A LIQUID |
DE69012559T DE69012559T2 (en) | 1989-05-31 | 1990-05-30 | METHOD AND DEVICE FOR CARBONIZING AND COOLING LIQUIDS. |
FI915579A FI91958C (en) | 1989-05-31 | 1991-11-27 | Method and apparatus for carbonating and cooling a liquid |
NO914679A NO176473C (en) | 1989-05-31 | 1991-11-28 | Method and apparatus for simultaneous carbonation and cooling of a liquid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8901970A SE464761B (en) | 1989-05-31 | 1989-05-31 | PROCEDURE AND DEVICE FOR CARBON ACID RESOLUTION AND COOLING OF A CHEER |
SE8901970-7 | 1989-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990015011A1 true WO1990015011A1 (en) | 1990-12-13 |
Family
ID=20376133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1990/000371 WO1990015011A1 (en) | 1989-05-31 | 1990-05-30 | Method and device for carbonating and cooling a liquid |
Country Status (18)
Country | Link |
---|---|
US (1) | US5231851A (en) |
EP (1) | EP0474758B1 (en) |
JP (1) | JP2875885B2 (en) |
KR (1) | KR920701034A (en) |
AT (1) | ATE111425T1 (en) |
AU (1) | AU634790B2 (en) |
BR (1) | BR9007408A (en) |
CA (1) | CA2056624A1 (en) |
DE (1) | DE69012559T2 (en) |
DK (1) | DK0474758T3 (en) |
ES (1) | ES2060177T3 (en) |
FI (1) | FI91958C (en) |
HU (1) | HU212724B (en) |
IL (1) | IL94517A (en) |
MX (1) | MX173061B (en) |
NO (1) | NO176473C (en) |
SE (1) | SE464761B (en) |
WO (1) | WO1990015011A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994012425A1 (en) * | 1992-11-20 | 1994-06-09 | Ab Konstruktions-Bakelit | Method and apparatus for carbonating and chilling a liquid |
WO1995009124A1 (en) * | 1993-09-28 | 1995-04-06 | Post-Mix Equipment Ab | Method and device for cooling and carbonating a liquid |
WO2000043311A1 (en) * | 1999-01-19 | 2000-07-27 | Whitlenge Drink Equipment Limited | Improvements relating to cooling devices |
KR100878788B1 (en) | 2008-06-03 | 2009-01-14 | 주식회사 엠씨테크 | Aparatus for dissolution of gas including filter |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL9401324A (en) * | 1994-08-16 | 1996-04-01 | Urenco Nederland Bv | Cooling process and cooling installation |
FR2782153B1 (en) * | 1998-08-05 | 2000-12-01 | Air Liquide | DEVICE AND METHOD FOR INJECTING A REFRIGERANT FLUID IN A PRODUCT MIXER |
US6178875B1 (en) * | 1999-01-19 | 2001-01-30 | Lancer Partnership. Ltd. | Carbon dioxide precooling system for a carbonator |
US6576276B1 (en) | 2000-10-25 | 2003-06-10 | The Coca-Cola Company | CO2-hydrate product and method of manufacture thereof |
DE20215685U1 (en) * | 2002-10-11 | 2004-04-01 | Spengler Gmbh & Co. Kg | carbonator |
US7344716B2 (en) * | 2003-05-13 | 2008-03-18 | Depuy Spine, Inc. | Transdiscal administration of specific inhibitors of pro-inflammatory cytokines |
GB2425165A (en) * | 2005-03-08 | 2006-10-18 | Imi Vision Ltd | Making frozen carbonated beverages(FCBs) |
GB0511455D0 (en) * | 2005-06-06 | 2005-07-13 | Imi Cornelius Uk Ltd | Apparatus and method for dispensing frozen carbonated beverages |
DE102005045157A1 (en) * | 2005-09-21 | 2007-03-29 | Friedhelm Selbach Gmbh | Process for the carbonation of water in a beverage dispenser and arrangement for mixing CO2 with water |
DE102007016712A1 (en) * | 2007-04-04 | 2008-10-09 | Air Liquide Deutschland Gmbh | Method and device for cooling a liquid |
US8048830B1 (en) | 2008-06-19 | 2011-11-01 | Cool Clean Technologies, Inc. | Method of forming and using carbonated machining fluid |
MX338655B (en) * | 2009-10-22 | 2016-04-27 | Angel Jose Enrique Soto Porrua | Reduction of the cooling time of the beer in processing tanks by injecting carbon dioxide gas. |
EP2766108B1 (en) | 2011-10-11 | 2016-08-17 | Flow Control LLC. | Adjustable in-line on demand carbonation chamber for beverage applications |
US9352355B1 (en) | 2012-04-15 | 2016-05-31 | David P. Jackson | Particle-plasma ablation process |
CA2946442C (en) | 2015-10-28 | 2018-05-01 | Guy Tipton | Beverage carbonation system and method |
BR112018009410B1 (en) * | 2015-11-30 | 2022-09-20 | Unilever Ip Holdings B.V. | PROCESS FOR MANUFACTURING FROZEN GAS HYDRATES FOR USE IN A FROZEN CONFECTIONERY PRODUCT |
MX2019011852A (en) | 2017-04-04 | 2020-12-11 | Cleanlogix Llc | PASSIVE ELECTROSTATIC CO<sub>2 </sub>COMPOSITE SPRAY APPLICATOR. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1051907A (en) * | 1963-05-07 | |||
US4022119A (en) * | 1975-12-22 | 1977-05-10 | Shasta Beverages Division Of Consolidated Food Corporation | Liquid carbon dioxide carbonation apparatus |
US4110996A (en) * | 1977-05-02 | 1978-09-05 | Phillips Petroleum Company | Method and apparatus for recovering vapor |
DE2940407A1 (en) * | 1979-10-05 | 1981-04-09 | Cornelius Apparate Gmbh, 4018 Langenfeld | METHOD AND DEVICE FOR ENRICHING LIQUIDS WITH GASES |
US4808346A (en) * | 1972-07-20 | 1989-02-28 | Strenger & Associates | Carbonated beverage dispensing apparatus and method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2880594A (en) * | 1956-05-10 | 1959-04-07 | Chemetron Corp | Method of and apparatus for storing and dispensing liquid carbon dioxide |
US3303660A (en) * | 1965-09-27 | 1967-02-14 | Clyde H O Berg | Process and apparatus for cryogenic storage |
US3672182A (en) * | 1970-06-25 | 1972-06-27 | Air Prod & Chem | Water cooling method and apparatus employing liquid nitrogen |
NL181189C (en) * | 1975-03-21 | Dagma Gmbh & Co | DEVICE FOR PREPARING A CARBONIC DRINK. | |
US4562013A (en) * | 1983-11-10 | 1985-12-31 | Cadbury Schweppes, Plc | Carbonator valve |
-
1989
- 1989-05-31 SE SE8901970A patent/SE464761B/en not_active IP Right Cessation
-
1990
- 1990-05-27 IL IL94517A patent/IL94517A/en not_active IP Right Cessation
- 1990-05-30 HU HU904795A patent/HU212724B/en not_active IP Right Cessation
- 1990-05-30 BR BR909007408A patent/BR9007408A/en not_active IP Right Cessation
- 1990-05-30 CA CA002056624A patent/CA2056624A1/en not_active Abandoned
- 1990-05-30 WO PCT/SE1990/000371 patent/WO1990015011A1/en active IP Right Grant
- 1990-05-30 EP EP90909209A patent/EP0474758B1/en not_active Expired - Lifetime
- 1990-05-30 AT AT90909209T patent/ATE111425T1/en not_active IP Right Cessation
- 1990-05-30 AU AU58234/90A patent/AU634790B2/en not_active Ceased
- 1990-05-30 DE DE69012559T patent/DE69012559T2/en not_active Expired - Fee Related
- 1990-05-30 ES ES90909209T patent/ES2060177T3/en not_active Expired - Lifetime
- 1990-05-30 KR KR1019910701729A patent/KR920701034A/en not_active Application Discontinuation
- 1990-05-30 DK DK90909209.0T patent/DK0474758T3/en active
- 1990-05-30 US US07/777,516 patent/US5231851A/en not_active Expired - Lifetime
- 1990-05-30 JP JP2508705A patent/JP2875885B2/en not_active Expired - Fee Related
- 1990-05-31 MX MX020956A patent/MX173061B/en unknown
-
1991
- 1991-11-27 FI FI915579A patent/FI91958C/en not_active IP Right Cessation
- 1991-11-28 NO NO914679A patent/NO176473C/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1051907A (en) * | 1963-05-07 | |||
US4808346A (en) * | 1972-07-20 | 1989-02-28 | Strenger & Associates | Carbonated beverage dispensing apparatus and method |
US4022119A (en) * | 1975-12-22 | 1977-05-10 | Shasta Beverages Division Of Consolidated Food Corporation | Liquid carbon dioxide carbonation apparatus |
US4110996A (en) * | 1977-05-02 | 1978-09-05 | Phillips Petroleum Company | Method and apparatus for recovering vapor |
DE2940407A1 (en) * | 1979-10-05 | 1981-04-09 | Cornelius Apparate Gmbh, 4018 Langenfeld | METHOD AND DEVICE FOR ENRICHING LIQUIDS WITH GASES |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994012425A1 (en) * | 1992-11-20 | 1994-06-09 | Ab Konstruktions-Bakelit | Method and apparatus for carbonating and chilling a liquid |
WO1995009124A1 (en) * | 1993-09-28 | 1995-04-06 | Post-Mix Equipment Ab | Method and device for cooling and carbonating a liquid |
US5749233A (en) * | 1993-09-28 | 1998-05-12 | Post-Mix Equipment Ab | Method and device for cooling and carbonating a liquid |
WO2000043311A1 (en) * | 1999-01-19 | 2000-07-27 | Whitlenge Drink Equipment Limited | Improvements relating to cooling devices |
KR100878788B1 (en) | 2008-06-03 | 2009-01-14 | 주식회사 엠씨테크 | Aparatus for dissolution of gas including filter |
Also Published As
Publication number | Publication date |
---|---|
DK0474758T3 (en) | 1994-10-17 |
AU634790B2 (en) | 1993-03-04 |
NO914679L (en) | 1991-11-28 |
ATE111425T1 (en) | 1994-09-15 |
DE69012559T2 (en) | 1995-02-02 |
EP0474758A1 (en) | 1992-03-18 |
DE69012559D1 (en) | 1994-10-20 |
IL94517A0 (en) | 1991-03-10 |
KR920701034A (en) | 1992-08-11 |
BR9007408A (en) | 1992-06-16 |
SE464761B (en) | 1991-06-10 |
SE8901970L (en) | 1990-12-01 |
IL94517A (en) | 1992-11-15 |
NO914679D0 (en) | 1991-11-28 |
CA2056624A1 (en) | 1990-12-01 |
MX173061B (en) | 1994-01-31 |
ES2060177T3 (en) | 1994-11-16 |
US5231851A (en) | 1993-08-03 |
FI91958C (en) | 1994-09-12 |
FI915579A0 (en) | 1991-11-27 |
EP0474758B1 (en) | 1994-09-14 |
HU212724B (en) | 1996-10-28 |
JP2875885B2 (en) | 1999-03-31 |
FI91958B (en) | 1994-05-31 |
AU5823490A (en) | 1991-01-07 |
NO176473B (en) | 1995-01-02 |
NO176473C (en) | 1995-04-12 |
JPH04505904A (en) | 1992-10-15 |
HU904795D0 (en) | 1992-02-28 |
SE8901970D0 (en) | 1989-05-31 |
HUT59359A (en) | 1992-05-28 |
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