EP0066118A1 - Procédé pour empêcher la solidification de metaux fondus dans le canal d'evacuation d'une poche de coulée et dispositif de coulée pour métaux fondus pour la mise en oeuvre du procédé - Google Patents

Procédé pour empêcher la solidification de metaux fondus dans le canal d'evacuation d'une poche de coulée et dispositif de coulée pour métaux fondus pour la mise en oeuvre du procédé Download PDF

Info

Publication number
EP0066118A1
EP0066118A1 EP82104015A EP82104015A EP0066118A1 EP 0066118 A1 EP0066118 A1 EP 0066118A1 EP 82104015 A EP82104015 A EP 82104015A EP 82104015 A EP82104015 A EP 82104015A EP 0066118 A1 EP0066118 A1 EP 0066118A1
Authority
EP
European Patent Office
Prior art keywords
casting
slide part
movable slide
outlet channel
closed position
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.)
Granted
Application number
EP82104015A
Other languages
German (de)
English (en)
Other versions
EP0066118B1 (fr
Inventor
Bernhard Tinnes
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.)
Metacon AG
Original Assignee
Metacon AG
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
Application filed by Metacon AG filed Critical Metacon AG
Priority to AT82104015T priority Critical patent/ATE11018T1/de
Publication of EP0066118A1 publication Critical patent/EP0066118A1/fr
Application granted granted Critical
Publication of EP0066118B1 publication Critical patent/EP0066118B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/38—Means for operating the sliding gate

Definitions

  • the invention relates to a casting device for metallic melts according to the preamble of claim 1.
  • the outlet channel is filled with a non-metallic filler or with a metal with a low melting point when the vessel is empty.
  • gas e.g. an inert gas. Openings for the entry of gas into the outlet channel are provided either directly in the perforated brick or in the perforated stone sleeve, in the fixed base plate of the slide or in the movable slide plate itself, in the latter case the gas inlet opening only in the closed slide position with the outlet channel in Connection is established.
  • the aim is to circulate the melt located in the outlet channel in order to mix colder melt with warmer melt and thereby prevent or delay its solidification.
  • the blowing in of air or other non-inert gases and nitrogen is generally forbidden for metallurgical reasons and therefore more expensive, inert gas must be used. Gas blowing not only results in increased operating costs, but the melt is also cooled by the cold gas entering. There is also the risk that, due to active heat removal by the gas flow, both from the melt in the outlet channel and from the refractory material delimiting this outlet channel if heat is insufficiently supplied from the casting vessel, e.g. a sudden freeze occurs due to insufficient circulation.
  • the object of the invention is to provide a device with which the freezing of the outlet channel, both before the start and during operational interruptions in the casting process, can be avoided reliably and without significant increase in operating costs.
  • the object is achieved in that the movable slide part is driven oscillating in the closed position transversely to the outlet channel.
  • the solution according to the invention therefore does not aim to bring about an exchange of colder for warmer melt in the outlet channel by circulating the same. Rather, this solution is the He is based on the knowledge that the solidification of a melt layer resting on a flat surface can be delayed if the boundary surface is subjected to a back and forth movement in the plane.
  • the invention prevents the formation of a coherent solidification front in the melt layers close to the wall immediately above the movable slide part in the pouring spout. This is done by introducing shear loads into the melt parallel to the main solidification front by means of the oscillating movement of the movable slide part. Forces are apparently also transferred into the zones of the outlet channel near the wall, which are at a certain distance from the movable slide part. In any case, the solution according to the invention succeeds in stopping the freezing even at temperatures which are only slightly above the liquidus temperature.
  • the oscillation drive is also provided for positions other than the closed position of the movable slide part.
  • the oscillation drive can also be provided for the fully open position or, in the case of a control slide, also for intermediate positions between the open and the closed position. If the oscillation drive is superimposed on the actuator either directly or in relation to the corresponding signals, the oscillation drive can be in continuous operation.
  • the casting device comprises a program control for periodically opening and closing movements of the movable slide part.
  • the program control determines the frequency, the size of the movement and the dwell time in the respective open position.
  • the program control is preferably designed to be adjustable in relation to the aforementioned variables.
  • the program control can form part of a control device, the program control being able to be operated either only in the closed position or, if need be, also in a partially open position of the movable slide part.
  • 2 generally designates a schematically illustrated casting vessel (distributor) which has a perforated brick 6 inserted in its base 4.
  • the perforated brick 6 delimits an upper part of an outlet channel 8, which continues downward in the base plate 12 of a conventional slide closure, generally designated 10.
  • the slide closure 10, which is also only shown schematically, comprises a plate-shaped, movable slide part 14 and a plate-shaped pouring part 16 rigidly connected to the base plate 12.
  • the pouring part 16 has a pouring opening 18 aligned with the outlet channel 8, while the slide part 14 has a passage Owns 20.
  • the slide part 14, which is clamped between the base plate 12 and the pouring part 16 but can be displaced transversely to the outlet channel 8, is by means of an actuating device generally designated 22 between an open position in which the passage 20 is also aligned with the outlet channel 8 and the closed one, in the drawing (Fig. 1 and 2) shown movable position, in which the latter the connection between the outlet channel 8 and the pouring opening 18 is interrupted.
  • the actuating device 22 comprises a cylinder-piston unit 24 which is operatively connected to the slide part 14 and which is connected to a servo control block 26 via corresponding lines for a liquid medium.
  • the servo control block 26 controls the cylinder-piston unit 24 in a known manner and is connected to a pump 28 and a liquid tank 30 as shown.
  • a schematically illustrated control device 32 acts on the servo control block 26, which can either be operated by hand or switched on in a control circuit, not shown.
  • the control device 32 allows the servo control block 26 to be actuated to generate the actuating movements of the slide part 14.
  • an oscillator 34 is provided in accordance with the exemplary embodiment shown in FIG. 1, which is connected to a vibrator 36 and causes this to generate oscillating movements of predetermined frequency and amplitude.
  • the vibrator 36 is connected between parts 38 and 40 of a piston rod which connects the cylinder-piston unit 24 to the movable slide part 14.
  • an arm 42 is rigidly attached to the part 38 of the piston rod, which in the closed position is connected to a position transmitter 44, e.g. interacts in the form of a proximity switch (reedswitch).
  • the position transmitter 44 connected to the oscillator 34 switches the former on before the movable slide part 14 has reached the closed position, e.g. as long as there is still a short covering between the outlet channel 8, the passage 20 and the pouring opening 18.
  • the vibrator 36 is thus also switched on before the movable slide part has reached the closed position. On the other hand, the vibrator 36 comes to rest only when the movable slide part
  • the oscillator 34 can be adjustable in order to change the extent (stroke) and / or the time course of the oscillation movement on the movable slide part 14.
  • strokes of the order of a few millimeters, e.g. 3 mm are suitable, frequencies of 1 to 2 strokes per second have proven to be sufficient.
  • other temporal courses can also be considered.
  • the exemplary embodiment of the casting device shown in FIG. 2 is designed for use in a continuous casting plant.
  • the control device 33 connected to the servo control block 26 has an input 52 for signals from a measuring device, not shown, which is attached to the mold and measures the fill level in the same.
  • a program control 48 which acts on the control device in predetermined states, is also connected to the control device 33.
  • the control device 33 is connected to the oscillator 34, which in turn is directly connected to the servo control block 26. Via the control device, the program controller 48 puts the oscillator 34 into operation when the former allows the slide lock to move into the closed position. In this case, the oscillator 34 acts on the control signal superimposed by the control device 32 is produced.
  • the oscillation movement is thus generated by the cylinder piston unit 24 which generates the actuating movements.
  • the program control also initiates control signals which intervene in the regulation and cause the movable slide part 14 to move up and down via the servo control block 26 and the cylinder-piston unit 24.
  • a casting device according to FIG. 2 was used in a continuous casting plant.
  • the outlet channel 8 had a diameter of 45 mm.
  • a low-alloy structural steel with a content of 0.04-0.05% of metallic aluminum and a temperature which was on average 20 ° C. above the liquidus temperature was poured out of the casting vessel or distributor 2.
  • the slide part 14 brought into the closed position was controlled by the oscillator 34 and driven in an oscillating manner. Two complete oscillations per second are carried out, each consisting of a stroke of 3 mm in the opening direction and an equally long stroke in the closing direction.
  • the passage 20 remained completely covered by the base plate 12.
  • the casting operation could be restarted regularly after interruptions lasting 2 minutes.
  • the movable slide part could be moved into an open position without difficulty and the melt emerges from the pouring opening 18 without delay.
  • the program control was switched on during the interruptions in the casting process.
  • the program control caused the oscillation movements to be interrupted every 30 seconds by moving the movable slide part up and down.
  • the stroke length was set so that the movable slide part in the one end position on the outlet channel released a gap of 3 to 5 mm in width, the dwell time in this position being 1 second.
  • the melt flowing out during the upward movement reached the mold and could be taken up for 3 minutes without exceeding the volume reserve present in it or due to contraction of the strand.
  • the resumption of the casting operation after this interruption period was problem-free and there were no signs of the outlet channel freezing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Continuous Casting (AREA)
  • Processing Of Solid Wastes (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Closures For Containers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP82104015A 1981-06-01 1982-05-08 Procédé pour empêcher la solidification de metaux fondus dans le canal d'evacuation d'une poche de coulée et dispositif de coulée pour métaux fondus pour la mise en oeuvre du procédé Expired EP0066118B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82104015T ATE11018T1 (de) 1981-06-01 1982-05-08 Verfahren zum verhindern des einfrierens von metallischen schmelzen im auslaufkanal eines giessgefaesses und giesseinrichtung fuer metallische schmelzen zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3546/81 1981-06-01
CH3546/81A CH653269A5 (de) 1981-06-01 1981-06-01 Verfahren zum verhindern des einfrierens von metallischen schmelzen im auslaufkanal eines giessgefaesses.

Publications (2)

Publication Number Publication Date
EP0066118A1 true EP0066118A1 (fr) 1982-12-08
EP0066118B1 EP0066118B1 (fr) 1985-01-02

Family

ID=4258313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104015A Expired EP0066118B1 (fr) 1981-06-01 1982-05-08 Procédé pour empêcher la solidification de metaux fondus dans le canal d'evacuation d'une poche de coulée et dispositif de coulée pour métaux fondus pour la mise en oeuvre du procédé

Country Status (10)

Country Link
US (1) US4759479A (fr)
EP (1) EP0066118B1 (fr)
JP (1) JPS57209770A (fr)
AT (1) ATE11018T1 (fr)
CA (1) CA1190022A (fr)
CH (1) CH653269A5 (fr)
DE (1) DE3261752D1 (fr)
ES (2) ES8308735A1 (fr)
IN (1) IN160850B (fr)
MX (1) MX158021A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4694885A (en) * 1985-06-06 1987-09-22 Hitachi Zosen Corporation Apparatus for continuous casting of thin metallic plate
EP0245580A2 (fr) * 1986-05-13 1987-11-19 Zimmermann & Jansen GmbH Procédé et dispositif pour réguler l'écoulement d'une buse de coulée d'un récipient pour métal en fusion
WO1989002801A1 (fr) * 1987-09-24 1989-04-06 Kevin Thompson Procede et dispositif pour regler l'admission d'un liquide dans un recipient
US4896801A (en) * 1967-07-11 1990-01-30 Flo-Con Systems, Inc. Method for controlling the discharge channel of a casting container (tundish) for metallic meltings, and a device for carrying out the method
WO1991010525A1 (fr) * 1990-01-16 1991-07-25 Flogates Limited Procede et appareil de coulage de metal

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6156766A (ja) * 1984-08-24 1986-03-22 Sumitomo Metal Ind Ltd 溶融金属の注入方法
JPS6254566A (ja) * 1985-05-10 1987-03-10 Sumitomo Metal Ind Ltd 溶鋼供給量の制御方法および制御装置
DE3742215A1 (de) * 1987-12-12 1989-06-22 Metacon Ag Verfahren zum freihalten des durchflusskanals von schiebeverschluessen an stranggiessanlagen
DE3869957D1 (de) * 1988-08-31 1992-05-14 Metacon Ag Verfahren zum steuern von schieberverschluessen, insbesondere an stranggiessanlagen.
CH678701A5 (fr) * 1989-03-31 1991-10-31 Stopinc Ag
GB2311947A (en) * 1996-03-12 1997-10-15 Flogates Ltd Sliding gate valve
ES2224328T3 (es) * 1998-02-18 2005-03-01 Mann + Hummel Protec Gmbh Dispositivo para producto a granel sueltos.
GB0013133D0 (en) * 2000-05-31 2000-07-19 Ibm Volumetric pump
US9964498B2 (en) * 2015-09-11 2018-05-08 Baylor University Electromagnetic steam energy/quality, flow, and fluid property sensor and method
KR101960935B1 (ko) * 2017-08-24 2019-03-21 주식회사 포스코 래들 및 이를 이용한 용강 처리 방법
CN113828765A (zh) * 2021-09-22 2021-12-24 重庆钢铁股份有限公司 一种中间包滑板气动控制机构
WO2024112549A1 (fr) * 2022-11-23 2024-05-30 Ajf, Inc. Système vibratoire et procédé de transfert d'acier en fusion

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2219815A1 (fr) * 1973-03-01 1974-09-27 Uss Eng & Consult
FR2220332A1 (fr) * 1973-03-06 1974-10-04 Sumitomo Metal Ind

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040768A (en) * 1959-08-13 1962-06-26 Double A Products Company Oscillating valve
US3773226A (en) * 1970-04-23 1973-11-20 Didier Werke Ag Container with sliding shutter for a liquid melt
JPS50110936A (fr) * 1974-02-13 1975-09-01
US4077457A (en) * 1974-03-06 1978-03-07 Sumitomo Metal Industries Limited Molten metal pouring control method and apparatus for use in continuous casting equipment
US3906975A (en) * 1974-03-08 1975-09-23 Gen Motors Corp Hydraulic pulsed governor
US4092771A (en) * 1974-03-27 1978-06-06 Metacon Ag Process and apparatus for renewing sliding gate valve units for casting ladles
ES437798A1 (es) * 1974-05-24 1977-05-16 Metacon Ag Procedimiento para el montaje de cierres de corredera para cucharas de colada.
CH571374A5 (fr) * 1974-07-12 1976-01-15 Metacon Ag
US4076153A (en) * 1974-10-24 1978-02-28 Metacon Ag Plate structure for a liquid metal container closure
JPS5182664A (fr) * 1974-12-27 1976-07-20 Kurosaki Refractories Co
CH576087A5 (fr) * 1975-01-16 1976-05-31 Metacon Ag
DE2918344A1 (de) * 1979-05-07 1980-11-20 Metacon Ag Schieberverschluss fuer den abstichkanal eines metallurgischen ofens oder gefaesses
DE2918333A1 (de) * 1979-05-07 1980-11-20 Metacon Ag Metallurgischer ofen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2219815A1 (fr) * 1973-03-01 1974-09-27 Uss Eng & Consult
FR2220332A1 (fr) * 1973-03-06 1974-10-04 Sumitomo Metal Ind

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4896801A (en) * 1967-07-11 1990-01-30 Flo-Con Systems, Inc. Method for controlling the discharge channel of a casting container (tundish) for metallic meltings, and a device for carrying out the method
US4694885A (en) * 1985-06-06 1987-09-22 Hitachi Zosen Corporation Apparatus for continuous casting of thin metallic plate
EP0245580A2 (fr) * 1986-05-13 1987-11-19 Zimmermann & Jansen GmbH Procédé et dispositif pour réguler l'écoulement d'une buse de coulée d'un récipient pour métal en fusion
EP0245580A3 (fr) * 1986-05-13 1988-11-09 Zimmermann & Jansen GmbH Procédé et dispositif pour réguler l'écoulement d'une buse de coulée d'un récipient pour métal en fusion
WO1989002801A1 (fr) * 1987-09-24 1989-04-06 Kevin Thompson Procede et dispositif pour regler l'admission d'un liquide dans un recipient
WO1991010525A1 (fr) * 1990-01-16 1991-07-25 Flogates Limited Procede et appareil de coulage de metal
GB2246533A (en) * 1990-01-16 1992-02-05 Flogates Ltd Metal pouring method and apparatus

Also Published As

Publication number Publication date
MX158021A (es) 1988-12-29
ES512677A0 (es) 1983-10-16
DE3261752D1 (en) 1985-02-14
ES8308735A1 (es) 1983-10-16
ATE11018T1 (de) 1985-01-15
CH653269A5 (de) 1985-12-31
ES522928A0 (es) 1984-11-16
US4759479A (en) 1988-07-26
JPH0123230B2 (fr) 1989-05-01
IN160850B (fr) 1987-08-08
JPS57209770A (en) 1982-12-23
CA1190022A (fr) 1985-07-09
EP0066118B1 (fr) 1985-01-02
ES8500576A1 (es) 1984-11-16

Similar Documents

Publication Publication Date Title
EP0066118B1 (fr) Procédé pour empêcher la solidification de metaux fondus dans le canal d'evacuation d'une poche de coulée et dispositif de coulée pour métaux fondus pour la mise en oeuvre du procédé
EP0592365B1 (fr) Procédé et dispositif pour commander le déplacement d'une poche de couleé dans une installation de couleé
EP0107068A1 (fr) Procédé pour la coulée continue horizontale de métaux, en particulier de l'acier
DE3231316A1 (de) Verfahren und vorrichtung zur steuerung des abgiessens einer schmelze aus einem schmelzenbehaelter mit einer bodenoeffnung
DE2952978C1 (de) Vorrichtung zur gasdynamischen Durchmischung von fluessigem Metall und gleichzeitiger Raffination mit einem Behandlungsgas in einem Behaelter
DE3334733C2 (de) Verfahren und Anlage zum Herstellen von hochreinen Legierungen
DE2807048A1 (de) Verfahren und vorrichtung zum behandeln von geschmolzenem metall mit zuschlagstoffen
DE2300621C3 (de) Verfahren zum Unterbrechen des Schmelzenflusses bei einer Anlage zum Giessen und Vorrichtung zur Durchführung des Verfahrens
DE3922549C2 (fr)
DE2450495B1 (de) Einrichtung zur Stahlerzeugung
DE3431181A1 (de) Verfahren und einrichtung fuer das behandeln und giessen von metallen und legierungen in einem geschlossenen raum
WO1989005700A1 (fr) Procede d'introduction de gaz dans la busette de coulee d'un recipient contenant une masse fondue de metal, notamment d'acier et manchon de coulee pour la mise en oeuvre du procede
DE2811546A1 (de) Verfahren und vorrichtung zum kontinuierlichen giessen von stahl
DE713584C (de) Anlage zum Giessen von Straengen
DE1945141A1 (de) Einrichtung zum horizontalen Stranggiessen
DE2929613A1 (de) Einrichtung an einer stranggiessanlage
EP0956917B1 (fr) Récipient métallurgique
EP0325792B1 (fr) Procédé pour la coulée d'une bande d'acier dans une installation de coulée pour bandes d'acier
AT376918B (de) Zwischengefaess zum vollkontinuierlichen stranggiessen
DE10105620A1 (de) Verfahren und Abdeckplatte zur Erzeugung einer Schlackeschicht auf der Oberfläche einer Metallschmelze
DE3616115A1 (de) Verfahren zum beherrschen des auslaufkanales eines giessgefaesses fuer metallische schmelzen und giesseinrichtung zur durchfuehrung des verfahrens
AT282854B (de) Verfahren und Vorrichtung zum Stranggießen von Stahl
DE2735421A1 (de) Verfahren und vorrichtung zum kontinuierlichen giessen eines stahlstranges
AT378140B (de) Diskontinuierliche stranggussanlage
CH448396A (de) Verfahren und Vorrichtung zum Stranggiessen von Metallen, insbesondere von Stahl

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19821021

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT LU NL SE

REF Corresponds to:

Ref document number: 11018

Country of ref document: AT

Date of ref document: 19850115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3261752

Country of ref document: DE

Date of ref document: 19850214

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 82104015.1

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970421

Year of fee payment: 16

Ref country code: FR

Payment date: 19970421

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19970423

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19970424

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970425

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970428

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19970429

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19970507

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980508

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980508

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980508

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980531

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980531

BERE Be: lapsed

Owner name: METACON A.G.

Effective date: 19980531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980508

EUG Se: european patent has lapsed

Ref document number: 82104015.1

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19981201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990302

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST