EP0476249B1 - Dispositif et procédé pour transporter et mélanger du matériau en vrac - Google Patents

Dispositif et procédé pour transporter et mélanger du matériau en vrac Download PDF

Info

Publication number
EP0476249B1
EP0476249B1 EP91111230A EP91111230A EP0476249B1 EP 0476249 B1 EP0476249 B1 EP 0476249B1 EP 91111230 A EP91111230 A EP 91111230A EP 91111230 A EP91111230 A EP 91111230A EP 0476249 B1 EP0476249 B1 EP 0476249B1
Authority
EP
European Patent Office
Prior art keywords
container
loose material
conveying
mixing
conveyor
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 - Lifetime
Application number
EP91111230A
Other languages
German (de)
English (en)
Other versions
EP0476249A1 (fr
Inventor
Otto Brandauer
Klaus Grassl
Alfred Kosnopfl
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.)
Mann and Hummel GmbH
Original Assignee
Filterwerk Mann and Hummel GmbH
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 Filterwerk Mann and Hummel GmbH filed Critical Filterwerk Mann and Hummel GmbH
Publication of EP0476249A1 publication Critical patent/EP0476249A1/fr
Application granted granted Critical
Publication of EP0476249B1 publication Critical patent/EP0476249B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/405—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles having guiding conduits therein, e.g. for feeding the gas to the bottom of the receptacle
    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/718—Feed mechanisms characterised by the means for feeding the components to the mixer using vacuum, under pressure in a closed receptacle or circuit system

Definitions

  • the invention relates to a device for conveying and mixing bulk material, in particular plastic granules.
  • a mixing device for bulk material which has a silo-like container with a funnel-shaped bottom and at least one riser is provided within the container, via which the bulk material pneumatically from the bottom area back into the upper part of the container is eligible.
  • a cellular wheel sluice is also provided at the outlet of the container, which requests the bulk material to the lower opening of the riser pipe.
  • this mixer requires a high level of mechanical components; in particular the cellular wheel sluice rotating in the bulk material is complex and also subject to wear.
  • the material must be discharged via the rotary valve, which means that the mixer cannot be emptied quickly.
  • a mixing device for bulk material with a container tapering downwards, a filter element arranged inside the container and a conveyor system for feeding the bulk material is known from JP-A-60139327.
  • the invention has for its object to avoid the disadvantages mentioned and to provide a device for conveying and mixing bulk material, which is characterized by a simple structure and which at the same time ensures reliable mixing of the bulk material.
  • the basic idea and thus an essential advantage of the invention is the linking of the conveyance of the bulk material into the container with the simultaneous mixing of the bulk material conveyed into the container. Due to this simultaneous mixing, several types of bulk goods can be fed into the container in succession via the conveyor pipe system.
  • the mixing of the bulk material is achieved in that the material introduction nozzle is designed in such a way that its end extends into the immediate vicinity of the bottom of the container.
  • the suction conveyor fan causes the material to deflect as soon as it has left this material inlet nozzle and rises in the container.
  • the newly entering material mixes very intensively with the material already present in the container without additional structural elements in the container, such as guide vanes or mixer devices, being necessary.
  • this metering can take place via a time control of the delivery valves.
  • Such a time control works very reliably without great effort and is suitable for conveying materials which have approximately the same physical properties.
  • Another possibility of metering is that the container is arranged on a load cell.
  • the gravimetric detection of the conveyed material takes place via this load cell, so that there is the possibility here of making a very precise determination of the conveyed material weight.
  • such a mixing and conveying method is used to mix new plastic granulate with granulated regrind. While the granulated regrind is already colored, color additives have to be added to color the new goods. It has proven to be particularly advantageous for the admixing to take place as a function of the quantity of new goods conveyed.
  • the non-colored plastic granulate is fed to the container as bulk material and its quantity is recorded gravimetrically. Depending on this quantity delivered, the color additives are dosed via the additional dosing device for the smallest components. This ensures that the color of the mixed material remains constant, even with different mixing ratios of new goods and granulated regrind.
  • the device for performing the method is particularly simple.
  • the container is equipped with an automatically closing bottom flap, which is controlled by the negative pressure in the container.
  • a filter element in the manner of a pocket filter is arranged inside the container and can be cleaned if necessary.
  • the conveyor pipe system is directly connected to all of the conveyor pipes at the material inlet connection, the end of which is positioned in the container in the manner according to the invention.
  • this device provides that a two-way valve is provided at the outlet of the container. With this two-way valve, the bulk material can either be fed directly into the machine hopper or fed into a collecting container. This collecting container is used to remove residual material from the container and to separate a mixture that does not meet the specified tolerance range.
  • a metal detector can be connected upstream of the two-way valve. This has the advantage that any metal particles present in the bulk material are recognized and these metal particles also get into the collecting container by controlling the two-way valve.
  • the conveying and mixing device consists of a container 10 which tapers conically downward and has a bottom closure flap 11 at its lower end, which opens automatically when the conveying air is switched off.
  • a filter element 12 is arranged within the container and filters the conveying air sucked upward out of the container.
  • the conveying air of the suction conveyor is generated by a suction conveyor fan 13, which is provided with a motor 14.
  • the conveying air is controlled via a valve 15 which is arranged in the conveying air line 16.
  • a material introduction nozzle 17 is inserted, the outlet end 18 of which extends right up to the vicinity of the bottom closure flap 11.
  • An additional air valve 24 is also connected to the delivery pipe system via a pipe 23. Ambient air can be sucked into the conveyor pipe system via this additional air valve.
  • a conveying and mixing process is as follows.
  • the suction conveying fan 13 is switched on, the valve 15 is opened. This creates a negative pressure in the container 10.
  • the bottom closure flap 11 remains closed.
  • the bulk material 25 flowing in via the material inlet connection 17 flows upward and fills the container.
  • the corresponding delivery valve is closed, the auxiliary air valve 24 is opened in the meantime and then the delivery valve for the second type of bulk material is opened.
  • this material flows into the container via the material inlet connection, rises there and mixes with the first material.
  • the material located in particular in the area of the container wall moves downward, but is again introduced into this upward flow there, so that a good mixing of the two materials is ensured.
  • the corresponding conveying valve is switched off and the additional air valve is opened.
  • the additional air now flowing in has the effect that all downstream of the delivery valves 21, 22 Pipelines are sucked empty. In addition, this additional air causes further mixing of the materials 25 in the container 10.
  • FIG. 2 shows a conveying and mixing device in which the container 10 is arranged on a load cell 26.
  • This weighing cell 26 enables gravimetric detection of the bulk materials flowing into the container, so that an exact determination of the mixing ratio of the bulk materials can be carried out.
  • a machine hopper 27 is shown, which is arranged directly on an injection molding machine when using the conveying and mixing device in the plastics processing industry, so that the material mixed in the container 10 (plastic granulate) can be fed directly to the machine. If the addition of very small amounts of material is required, for example the addition of color pigments, it is advisable to connect an additional metering device (28) to the conveying and mixing device to maintain the exact mixing ratio.
  • Such an additional metering device 28 consists of a container 29, which has a screw dosing device or the like at its outlet, the metered quantity being fed to a downstream weighing container 30, which is also attached to a weighing cell 31.
  • the material provided by this metering device reaches the common conveying system via the conveying line 32 and the conveying valve 33.
  • a two-way valve 34 can be arranged below the container 10.
  • This two way valve has the task of separating out material that flows out of the container 10 and is not intended to get into the machine hopper 27.
  • This material is fed via line 35 to a collecting container 36.
  • the valve can be operated via a suitable control device.
  • the valve is also actuated by means of a metal detector 37. This is arranged above the valve and, when a metal particle is sensed within the bulk material flow, switches this valve over, so that the part of the bulk material flow in which the metal particle is located also the collecting container 36 is fed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processing Of Solid Wastes (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Claims (11)

  1. Dispositif pour transporter et mélanger du matériau en vrac comprenant :
    - un réservoir (10) qui se rétrécit vers le bas et comporte un volet de fermeture (11) pour le fond,
    - une machine aspirante (13) prévue à l'extérieur du réservoir (10) et qui est reliée à la partie supérieure du réservoir (10) pour aspirer le produit à transporter,
    - un élément de filtre (12) prévu à l'intérieur du réservoir pour filtrer l'air d'entraînement, aspiré,
    - un système de conduite de transport pour fournir le matériau en vrac à transporter, avec au moins deux tubes de transport (19, 20) équipés chacun d'une vanne de transport (21, 22), caractérisé en ce que :
    - une vanne d'air supplémentaire (24) est raccordée au système des tuyaux de transport,
    - tous les tuyaux de transport débouchent dans un ajutage d'entrée de matériau (17) qui arrive dans le réservoir (10) et dont l'extrémité ouverte débouche dans le réservoir (10) jusque directement au niveau du volet de fermeture (11) du fond, pour que le matériau en vrac (25), transporté, qui arrive par l'ajutage d'entrée de matériau (17), arrive directement au niveau du volet de fermeture (11) du fond et y subit une déviation pour qu'en remontant dans le réservoir (10) il se mélange avec le matériau en vrac qui s'y trouve déjà.
  2. Dispositif pour le transport et le mélange selon la revendication 1, caractérisé en ce qu'en aval de la sortie du réservoir (10) il y a une vanne à deux voies (34) pour conduire le flux de matériau dans une trémie de machine (27) en aval ou dans un réceptacle de collecte (36).
  3. Dispositif pour le transport et le mélange selon la revendication 2, caractérisé en ce qu'entre la sortie et la vanne à deux voies (34) se trouve un détecteur de métal (37) qui détecte les particules métalliques contenues dans le matériau en vrac et commute la vanne à deux voies (34) lors de la détection de particules métalliques pour que le matériau contenant les particules métalliques soit conduit vers le réceptacle (36).
  4. Installation composée de plusieurs dispositifs selon les revendications 1 à 3, ces dispositifs étant prévus dans un système de transport à plusieurs postes et ils sont reliés à un seul système d'exploitation et de commande qui commande successivement les différents dispositifs selon un procédé en multiplex.
  5. Procédé pour transporter et mélanger du matériau en vrac à l'aide du dispositif de la revendication 1, caractérisé en ce qu'en commutant les vannes de transport (21, 22) entre l'alimentation d'un premier matériau en vrac et l'alimentation d'un second matériau en vrac on ouvre la vanne d'air supplémentaire (24) pour que le courant d'air ne soit pas interrompu et conserve l'opération de mélange pneumatique.
  6. Procédé pour transporter et mélanger du matériau en vrac selon la revendication 5, caractérisé en ce qu'à la fin du transport du matériau en vrac, la soupape d'air supplémentaire (24) est ouverte pour s'assurer que tous les éléments de conduite en aval des vannes de transport (21, 22) soient vides.
  7. Procédé pour transporter et mélanger du matériau en vrac selon l'une des revendications 5, 6, caractérisé en ce qu'après la fin du transport du matériau en vrac, la soupape d'air supplémentaire (24) est ouverte et on prolonge de manière quelconque l'opération de mélange sans autre alimentation de matériau en vrac.
  8. Procédé pour transporter et mélanger du matériau en vrac selon l'une des revendications 5 à 7, caractérisé en ce que le dosage des matériaux en vrac à mélanger se fait par une commande dans le temps des vannes de transport (21, 22).
  9. Procédé pour transporter et mélanger du matériau en vrac selon l'une des revendications 5 à 8, caractérisé en ce que le dosage des matériaux en vrac à transporter se fait par la détection gravimétrique du poids transporté à l'aide d'au moins une cellule de pesée (26) prévue sur le réservoir (10).
  10. Procédé pour transporter et mélanger du matériau en vrac selon l'une des revendications 5-9, caractérisé en ce que le dosage des petits composants se fait par un dispositif de dosage supplémentaire (28) équipant la conduite de transport (32) correspondante.
  11. Procédé pour transporter et mélanger du matériau en vrac selon la revendication 10, caractérisé en ce que le dosage d'un petit composant se fait en fonction de la quantité gravimétrique détectée dans un type de matériau en vrac contenu dans le réservoir ou de l'ensemble du matériau en vrac accumulé dans le réservoir.
EP91111230A 1990-09-21 1991-07-05 Dispositif et procédé pour transporter et mélanger du matériau en vrac Expired - Lifetime EP0476249B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4029902A DE4029902C2 (de) 1990-09-21 1990-09-21 Verfahren zum Fördern und Mischen von Schüttgut
DE4029902 1990-09-21

Publications (2)

Publication Number Publication Date
EP0476249A1 EP0476249A1 (fr) 1992-03-25
EP0476249B1 true EP0476249B1 (fr) 1994-10-12

Family

ID=6414677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111230A Expired - Lifetime EP0476249B1 (fr) 1990-09-21 1991-07-05 Dispositif et procédé pour transporter et mélanger du matériau en vrac

Country Status (3)

Country Link
EP (1) EP0476249B1 (fr)
AT (1) ATE112699T1 (fr)
DE (2) DE4029902C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108993287A (zh) * 2018-07-20 2018-12-14 成都恩承科技股份有限公司 气动溶药装置及溶药方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19639856C2 (de) * 1996-09-27 2001-03-15 Gert Streicher Verfahren und Vorrichtung zum Fördern von Feinstoffen als Zuschlag in körnigen Produkten
EP0997184A1 (fr) * 1998-10-02 2000-05-03 Mann + Hummel ProTec GmbH Dispositif pour transporter et mélanger du matériau en vrac
US7846399B2 (en) 2004-03-23 2010-12-07 W.R. Grace & Co.-Conn. System and process for injecting catalyst and/or additives into a fluidized catalytic cracking unit
US9504975B2 (en) 2004-03-23 2016-11-29 W. R. Grace & Co.-Conn. System and process for injecting catalyst and/or additives into a fluidized catalytic cracking unit
US8926907B2 (en) 2004-03-23 2015-01-06 W. R. Grace & Co.-Conn System and process for injecting catalyst and/or additives into a fluidized catalytic cracking unit
DE102007046622A1 (de) * 2007-09-27 2009-04-02 Mann + Hummel Protec Gmbh Einrichtung zum Fördern und Mischen von Schüttgut
DE102009015271B4 (de) 2009-04-01 2014-04-03 Protec Polymer Processing Gmbh Bearbeitungseinrichtung für Schüttgut
RU2640469C2 (ru) 2011-10-18 2018-01-09 В.Р. Грейс Энд Ко.-Конн. Система введения катализаторов и/или добавок в установку крекинга с псевдоожиженным катализатором и способы их создания и применения
DE102012208717A1 (de) * 2012-05-24 2013-11-28 Coperion Gmbh Behandlungsvorrichtung sowie Behandlungsanlage für Schüttgut
CN111013468A (zh) * 2020-03-02 2020-04-17 河北工业大学 一种沸腾式混料机

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH412811A (de) * 1962-11-06 1966-05-15 Ruetschi Ag Pumpenbau K Verfahren zum Mischen und Einrichtung zur Durchführung des Verfahrens
FR1460098A (fr) * 1965-10-14 1966-11-25 Appareil perfectionné de brassage pneumatique
DE1506960A1 (de) * 1967-04-20 1969-07-10 Miag Muehlenbau & Ind Gmbh Abscheide- und Entnahmegefaess fuer pneumatisch gefoerdertes Schuettgut
GB1249827A (en) * 1969-08-21 1971-10-13 Simon Ltd Henry Improvements in or relating to mixing solids with liquids
DE2026337A1 (en) * 1970-05-29 1971-12-09 Fa Franz Josef Waschle, 7980 Ra vensburg Pneumatic mixing appts. - placed above helical screw feed of plastics extruder
US3707829A (en) * 1970-10-21 1973-01-02 Eastman Kodak Co Apparatus for injecting dry solid particles into a liquid including noise muffling means
US3819157A (en) * 1973-02-01 1974-06-25 Universal Oil Prod Co Mixing apparatus
DE2422963B1 (de) * 1974-05-11 1975-06-12 Dietrich Reimelt Kg, 6074 Urberach Pneumatische Misch- und Abförderanlage für (ließfähige Schüttgüter
DE2544441A1 (de) * 1975-10-04 1977-04-14 Motan Gmbh Vorrichtung zum mischen von granulatund/oder pulverfoermigen stoffen
DE2544716A1 (de) * 1975-10-07 1977-04-21 Zimmermann Azo Maschf Saugfoerderanlage
DE2618541B2 (de) * 1976-04-28 1980-08-14 Azo-Maschinenfabrik Adolf Zimmermann Gmbh, 6960 Osterburken Filterabscheider für eine pneumatische Schüttgut-Förderanlage
US4441822A (en) * 1980-09-03 1984-04-10 Foster Wheeler Energy Corporation Apparatus for mixing and distributing solid particulate material
JPS57171429A (en) * 1981-04-13 1982-10-22 Glatt Gmbh Rotary disk type granulator
DE3234911A1 (de) * 1982-09-21 1984-03-22 Herbert 7853 Steinen Hüttlin Fliessbettapparatur
DE3620749A1 (de) * 1986-06-20 1987-12-23 Waeschle Maschf Gmbh Umwaelzmischer fuer schuettgut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108993287A (zh) * 2018-07-20 2018-12-14 成都恩承科技股份有限公司 气动溶药装置及溶药方法

Also Published As

Publication number Publication date
DE4029902A1 (de) 1992-03-26
ATE112699T1 (de) 1994-10-15
DE4029902C2 (de) 1996-10-17
EP0476249A1 (fr) 1992-03-25
DE59103219D1 (de) 1994-11-17

Similar Documents

Publication Publication Date Title
DE3837608C2 (fr)
EP1036750B1 (fr) Dispositif de transport des granulés en matière plastique
EP0476249B1 (fr) Dispositif et procédé pour transporter et mélanger du matériau en vrac
DE2500601C2 (de) System zum regelbaren Ableiten und Verdichten teilchenförmigen Materials aus einem Wirbelschichtreaktor
EP0468399B1 (fr) Dispositif pour le dosage et/ou le mélange continu, pneumatique gravimetrique de marchandises en vrac
EP0595784A1 (fr) Procédé pour le dosage et la distribution d'un mélange alimentaire liquide dans des récépients différents et installation pour ce procédé
EP0216006A2 (fr) Procédé et dispositif pour adjoindre un pigment finement réparti aux particules synthétiques
DE3834191C2 (fr)
EP0472949B1 (fr) Dispositif d'alimentation d'une extrudeuse pour un matériel à extruder avec plusieurs composantes
DE2907011C2 (de) Vorrichtung zum Befüllen eines Sackes
EP0997184A1 (fr) Dispositif pour transporter et mélanger du matériau en vrac
DE2136328B2 (de) Vorrichtung zum Beschicken mehrerer Abnahmestellen mit aus Vorratsbehältern pneumatisch gefördertem Schüttgut
DE2819726A1 (de) Schwerkraftmischer fuer pulverfoermiges bis koerniges gut
WO2005005133A2 (fr) Procede et installation pour recevoir et traiter automatiquement des grappes
EP1080864B1 (fr) Dispositif pour l'alimentation de matière en vrac
EP0599047B1 (fr) Procédé pour déterminer le débit de matière retirée par une extrudeuse d'une trémie d'alimentation
DE19743481A1 (de) Vorrichtung zum Fördern und Mischen von Schüttgut
EP0395926B1 (fr) Installation de dorage et de mélange pour solides coulants
DE4319014A1 (de) Zyklonabscheider
DE3419518C2 (fr)
EP3309524B1 (fr) Procédé de remplissage d'un récipient de pesée pour du granulat en matière plastique
DE102006028580A1 (de) Vorrichtung zur Auslaufdosierung eines Mischwerkes
WO1991017940A1 (fr) Doseur a vis sans fin
WO2004065265A2 (fr) Dispositif pour transporter de la matiere en vrac et systeme de dosage et/ou de melange equipe de ce dispositif
DE19639856C2 (de) Verfahren und Vorrichtung zum Fördern von Feinstoffen als Zuschlag in körnigen Produkten

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

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19920804

17Q First examination report despatched

Effective date: 19931115

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19941012

Ref country code: NL

Effective date: 19941012

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19941012

Ref country code: GB

Effective date: 19941012

Ref country code: BE

Effective date: 19941012

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19941012

Ref country code: DK

Effective date: 19941012

Ref country code: FR

Effective date: 19941012

REF Corresponds to:

Ref document number: 112699

Country of ref document: AT

Date of ref document: 19941015

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59103219

Country of ref document: DE

Date of ref document: 19941117

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

Ref country code: SE

Effective date: 19950112

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19941012

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

Ref country code: AT

Effective date: 19950705

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

Ref country code: LI

Effective date: 19950731

Ref country code: CH

Effective date: 19950731

Ref country code: LU

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

Effective date: 19950731

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
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19960402