DE68912755T3 - Verfahren und Vorrichtung zur Mengenstromregelung von flüssigen CO2 und deren Anwendung für einen Kühltunnel. - Google Patents

Verfahren und Vorrichtung zur Mengenstromregelung von flüssigen CO2 und deren Anwendung für einen Kühltunnel.

Info

Publication number
DE68912755T3
DE68912755T3 DE68912755T DE68912755T DE68912755T3 DE 68912755 T3 DE68912755 T3 DE 68912755T3 DE 68912755 T DE68912755 T DE 68912755T DE 68912755 T DE68912755 T DE 68912755T DE 68912755 T3 DE68912755 T3 DE 68912755T3
Authority
DE
Germany
Prior art keywords
controlling
liquid
volume flow
cooling tunnel
point
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 - Fee Related
Application number
DE68912755T
Other languages
English (en)
Other versions
DE68912755D1 (de
DE68912755T2 (de
Inventor
Patrick Micheau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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=9373521&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE68912755(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of DE68912755D1 publication Critical patent/DE68912755D1/de
Application granted granted Critical
Publication of DE68912755T2 publication Critical patent/DE68912755T2/de
Publication of DE68912755T3 publication Critical patent/DE68912755T3/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B01F23/451—Mixing liquids with liquids; Emulsifying using flow mixing by injecting one liquid into another
    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/49—Mixing systems, i.e. flow charts or diagrams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/10—Arrangements for preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
    • 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
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23762—Carbon dioxide
    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/48—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids
    • B01F23/481—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids using liquefied or cryogenic gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/035—High pressure (>10 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0114—Propulsion of the fluid with vacuum injectors, e.g. venturi
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0636—Flow or movement of content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • F17C2260/024—Improving metering

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Accessories For Mixers (AREA)
DE68912755T 1988-12-28 1989-12-22 Verfahren und Vorrichtung zur Mengenstromregelung von flüssigen CO2 und deren Anwendung für einen Kühltunnel. Expired - Fee Related DE68912755T3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8817305A FR2641854B1 (fr) 1988-12-28 1988-12-28 Procede et dispositif de regulation d'un debit de co2 liquide, et application a un tunnel de refroidissement

Publications (3)

Publication Number Publication Date
DE68912755D1 DE68912755D1 (de) 1994-03-10
DE68912755T2 DE68912755T2 (de) 1994-05-11
DE68912755T3 true DE68912755T3 (de) 2001-08-02

Family

ID=9373521

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68912755T Expired - Fee Related DE68912755T3 (de) 1988-12-28 1989-12-22 Verfahren und Vorrichtung zur Mengenstromregelung von flüssigen CO2 und deren Anwendung für einen Kühltunnel.

Country Status (8)

Country Link
US (1) US5040374A (de)
EP (1) EP0376823B2 (de)
AT (1) ATE100921T1 (de)
AU (1) AU629584B2 (de)
CA (1) CA2006789C (de)
DE (1) DE68912755T3 (de)
ES (1) ES2048312T5 (de)
FR (1) FR2641854B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2179782A1 (de) 2008-10-22 2010-04-28 Messer France S.A.S. Anordnung zum Eintragen von flüssigem Kohlendioxid in ein Medium
WO2021121652A1 (de) 2019-12-18 2021-06-24 Linde Gmbh Verfahren und anordnung zur einbringung von gas in ein medium

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267446A (en) * 1992-11-27 1993-12-07 Thermo King Corp. Air conditioning and refrigeration systems utilizing a cryogen
US5285644A (en) * 1992-11-27 1994-02-15 Thermo King Corporation Air conditioning and refrigeration apparatus utilizing a cryogen
US5259198A (en) * 1992-11-27 1993-11-09 Thermo King Corporation Air conditioning and refrigeration systems utilizing a cryogen
US5320167A (en) * 1992-11-27 1994-06-14 Thermo King Corporation Air conditioning and refrigeration systems utilizing a cryogen and heat pipes
US5315840A (en) * 1992-11-27 1994-05-31 Thermo King Corporation Air conditioning and refrigeration methods and apparatus utilizing a cryogen
US5305825A (en) * 1992-11-27 1994-04-26 Thermo King Corporation Air conditioning and refrigeration apparatus utilizing a cryogen
US5267443A (en) * 1992-11-27 1993-12-07 Thermo King Corporation Air conditioning and refrigeration methods and apparatus utilizing a cryogen
US5311927A (en) * 1992-11-27 1994-05-17 Thermo King Corporation Air conditioning and refrigeration apparatus utilizing a cryogen
US5287705A (en) * 1993-02-16 1994-02-22 Thermo King Corporation Air conditioning and refrigeration systems utilizing a cryogen
US5363658A (en) * 1993-07-09 1994-11-15 The Boc Group, Inc. Apparatus and process for chilling food products
US5365744A (en) * 1993-11-08 1994-11-22 Thermo King Corporation Air conditioning and refrigeration systems utilizing a cryogen
FR2734624B1 (fr) * 1995-05-24 1997-07-04 Carboxyque Francaise Dispositif d'injection de liquide sous pression dans une enceinte
DE19621835A1 (de) * 1996-05-31 1997-12-04 Aga Ab Expansionsdüse und Verfahren zur Erzeugung von Kohlendioxidschnee
US5813237A (en) * 1997-06-27 1998-09-29 The Boc Group, Inc. Cryogenic apparatus and method for spraying a cryogen incorporating generation of two phase flow
US5868003A (en) * 1997-07-14 1999-02-09 Praxair Technology, Inc. Apparatus for producing fine snow particles from a flow liquid carbon dioxide
US5916246A (en) * 1997-10-23 1999-06-29 Thermo King Corporation System and method for transferring liquid carbon dioxide from a high pressure storage tank to a lower pressure transportable tank
FR2787862B1 (fr) * 1998-12-29 2001-01-26 Carboxyque Francaise Procede et dispositif d'injection regulee de dioxyde de carbone liquide dans un liquide sous pression
US6751966B2 (en) * 2001-05-25 2004-06-22 Thermo King Corporation Hybrid temperature control system
US6609382B2 (en) * 2001-06-04 2003-08-26 Thermo King Corporation Control method for a self-powered cryogen based refrigeration system
US6631621B2 (en) * 2001-07-03 2003-10-14 Thermo King Corporation Cryogenic temperature control apparatus and method
US6698212B2 (en) * 2001-07-03 2004-03-02 Thermo King Corporation Cryogenic temperature control apparatus and method
US6694765B1 (en) * 2002-07-30 2004-02-24 Thermo King Corporation Method and apparatus for moving air through a heat exchanger
US6895764B2 (en) * 2003-05-02 2005-05-24 Thermo King Corporation Environmentally friendly method and apparatus for cooling a temperature controlled space
FR2903482B1 (fr) 2006-07-10 2008-08-22 L'air Liquide Systeme d'injection de fluide cryogenique permettant le traitement de produits en vrac
ES2510290B2 (es) 2013-03-20 2015-04-30 Emilio PALOMO PINTO Sistema de refrigeración autónomo, portátil y autorefrigerante, basado en la utilización de un depósito estanco, conteniente de un gas licuado a presión, empleado como vaporizador, como consecuencia de la evaporación controlada de dicho GLP
US10512278B2 (en) 2015-04-24 2019-12-24 Messer Industries Usa, Inc. Inline mixing injector for liquid products
US20170038117A1 (en) * 2015-08-03 2017-02-09 Michael D. Newman Pulsed liquid-gas entrained cryogen flow generator
CN111254858B (zh) * 2020-03-06 2021-09-21 西南交通大学 一种液态二氧化碳清洗机和清洗方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB351839A (de) * 1929-09-23 1931-07-02 Hugo Mestern
GB807088A (en) * 1954-06-09 1959-01-07 Pyrene Co Ltd Improvements in valves for controlling the discharge of gas stored in the liquid state
US3109296A (en) * 1961-09-29 1963-11-05 Chemetron Corp Apparatus and method for refrigeration by carbon dioxide
US3214928A (en) * 1963-03-22 1965-11-02 Oberdorfer Karl Method and apparatus for freezing food products
US3661483A (en) * 1969-08-08 1972-05-09 Robert N Bose Apparatus for controlling the flow of liquid
US3708995A (en) * 1971-03-08 1973-01-09 D Berg Carbon dioxide food freezing method and apparatus
FR2142309A5 (en) * 1971-06-18 1973-01-26 Mille Gaston Cryogenic liq spray - of carbon dioxide eliminates snow formation
FR2368665A1 (fr) * 1976-10-25 1978-05-19 Carboxyque Francaise Appareillage de fourniture de dioxyde de carbone ou d'hemioxyde d'azote liquides sous pression

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2179782A1 (de) 2008-10-22 2010-04-28 Messer France S.A.S. Anordnung zum Eintragen von flüssigem Kohlendioxid in ein Medium
DE102008052802A1 (de) 2008-10-22 2010-04-29 Messer France S.A.S Anordnung zum Eintragen von flüssigem Kohlendioxid in ein Medium
WO2021121652A1 (de) 2019-12-18 2021-06-24 Linde Gmbh Verfahren und anordnung zur einbringung von gas in ein medium

Also Published As

Publication number Publication date
EP0376823B1 (de) 1994-01-26
ES2048312T3 (es) 1994-03-16
ATE100921T1 (de) 1994-02-15
ES2048312T5 (es) 2001-05-16
FR2641854A1 (fr) 1990-07-20
CA2006789A1 (fr) 1990-06-28
US5040374A (en) 1991-08-20
CA2006789C (fr) 1994-10-25
AU4732889A (en) 1990-07-05
EP0376823A1 (de) 1990-07-04
DE68912755D1 (de) 1994-03-10
EP0376823B2 (de) 2001-04-11
AU629584B2 (en) 1992-10-08
DE68912755T2 (de) 1994-05-11
FR2641854B1 (fr) 1994-01-14

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8339 Ceased/non-payment of the annual fee