WO1999062659A1 - Bouchon pour fermer des cuves contenant des metaux en fusion - Google Patents

Bouchon pour fermer des cuves contenant des metaux en fusion Download PDF

Info

Publication number
WO1999062659A1
WO1999062659A1 PCT/EP1999/003145 EP9903145W WO9962659A1 WO 1999062659 A1 WO1999062659 A1 WO 1999062659A1 EP 9903145 W EP9903145 W EP 9903145W WO 9962659 A1 WO9962659 A1 WO 9962659A1
Authority
WO
WIPO (PCT)
Prior art keywords
stopper
plug
insert sleeve
plug body
holding rod
Prior art date
Application number
PCT/EP1999/003145
Other languages
German (de)
English (en)
Inventor
Ian Proudfoot
Stephen John Lee
Original Assignee
Didier-Werke 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 Didier-Werke Ag filed Critical Didier-Werke Ag
Priority to AU40389/99A priority Critical patent/AU4038999A/en
Priority to DE59902127T priority patent/DE59902127D1/de
Priority to EP99923554A priority patent/EP1079947B1/fr
Publication of WO1999062659A1 publication Critical patent/WO1999062659A1/fr

Links

Classifications

    • 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
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/18—Stopper-rods therefor
    • 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
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/18—Stopper-rods therefor
    • B22D41/186—Stopper-rods therefor with means for injecting a fluid into the melt

Definitions

  • the invention relates to a stopper for the closure of
  • Containers holding molten metal e.g. rod-shaped plug body made of refractory material, which has a hole for the releasable engagement of e.g. has metal support rod for attachment to a lifting mechanism.
  • Such a stopper is known, for example, from EP-A-0358535.
  • a metal insert sleeve at a distance from the upper end of the rod-shaped plug body must be pressed and burned with it and have a threaded bore coaxial to the bore of the plug body, into which a metal holding rod provided with an external thread is to be screwed.
  • this plug is therefore complex and expensive in several respects.
  • a plug as a control valve for spouts in metallurgical Schm 'eizgefä in which the through-hole of the plug body on gaseiniriya furnishen upper end has an annular step.
  • a seal made of temperature-resistant material lies on the step.
  • a metal plug rod protrudes from above into the through hole and lies with an enlarged section on the seal.
  • a cylindrical refractory ceramic sleeve is screwed with an external thread in the upper enlarged section of the through hole into a corresponding internal thread of the plug body and is press-fitted against the retaining ring of the plug rod.
  • the stopper rod projects with its upper free end over the stopper body and is inserted with its free end below the retaining ring over a partial distance into the through hole of the stopper body.
  • This version requires a threaded connection between the ceramic sleeve and the plug body, which complicates the assembly.
  • the object of the present invention is to propose a stopper of the type mentioned at the outset, which is simple in construction, easy to assemble and permanently fixable relative to the lifting mechanism.
  • a stopper of the type mentioned at the outset for example, in that the holding rod has at its fastening end at least two diametrically opposite locking projections projecting radially outward from the circumference of the holding rod, which by corresponding to each other Angularly offset, adjacent to the bore, longitudinal slots of the plug body can be transferred into an axial position in which the holding rod with the locking projections can be rotated relative to the plug body into a position in which the locking projections move axially towards the upper end of the plug body can snap into locking recesses of the plug body which are offset at an angle to one another.
  • a particularly simple embodiment of the invention is realized when the longitudinal slots extend from the upper end of the plug body into a space for rotating the holding rod with the locking projections and the locking recesses open to a downward end face of the plug body.
  • the handle bar can be axially clamped in the locking position with respect to the stopper body.
  • the support rod can have an external thread for receiving a clamping nut, which is suitable for, if necessary, under Support the intermediate layer of a washer, which may have a larger cross section than the tightening nut, on an upper, preferably flat end face of the plug body.
  • a clamping nut which is suitable for, if necessary, under Support the intermediate layer of a washer, which may have a larger cross section than the tightening nut, on an upper, preferably flat end face of the plug body.
  • the holding rod has a longitudinal bore extending into the free space of the stopper body and a longitudinal bore of the plug body for the supply of the gas into the molten metal connects to the free space.
  • the longitudinal bores in flow connection are preferably aligned axially to one another.
  • Locking projections are cone-shaped and positive and / or non-positive, but releasable, can be received in the locking recesses. In this way, a pre-fixation of the support rod in the locking position with respect to the stopper body can already be ensured, so that an axial bracing of the support rod relative to the stopper body may be unnecessary.
  • locking projections there are more than two locking projections, these are arranged at the same angular spacing over the circumference of the holding rod. If, for example, three locking projections are provided, these are at an angular distance of 120 °, instead of 180 ° for two locking projections, so that for the transfer of the support rod into its locking position, only a rotation of the support rod by 60 ° is necessary, since the locking recesses are offset by 60 ° from the then three longitudinal slots in the stopper body.
  • this can be done in a simple manner, for example, by sealing the holding rod on its periphery with respect to the plug body, in particular by means of a temperature-resistant sealing ring, e.g. in the form of a ceramic, compressible fiber seal, between the washer and the plug body.
  • a temperature-resistant sealing ring e.g. in the form of a ceramic, compressible fiber seal
  • a stopper according to the invention for the closure of molten metal receptacles for example with a rod-shaped stopper body made of refractory material and with an insert sleeve in the region of the upper end of the stopper body, which is arranged essentially coaxially therewith and a bore for the releasable Engagement of a metal holding rod for attachment to a lifting mechanism, for example, the insert sleeve has a radial circumferential flange at a distance from the upper end of the stopper body, which is suitable for sealingly resting with its upper end face on an associated downwardly facing annular surface of the stopper body.
  • the insert sleeve is also shaped or molded in during the manufacture of the stopper body, the circumferential flange being located in a corresponding ring recess in the stopper body or occupying a corresponding ring region of the stopper body.
  • the ring area is created when the plug body is fired by burning out a suitable filler material.
  • a temperature-resistant sealing ring for example in the form of a ceramic compressible fiber seal, is provided, for example, embedded in the corresponding refractory material.
  • the insert sleeve is preferably axially movable relative to the stopper body and, as a result, can be clamped such that the upper end face of the peripheral flange lies sealingly against the associated ring surface of the stopper body.
  • the circumferential flange can have a non-circular circumference for engagement in a ring recess of the plug body which is correspondingly non-circular on the outside.
  • the flange flanged at one or more points.
  • a sealing ring e.g. is arranged in the form of a ceramic compressible fiber seal, there is a corresponding surface pressure to increase the tightness while compressing the sealing ring.
  • the insert sleeve be connected to the lower end of the holding rod, e.g. via thread, releasably connectable and the holding rod carries a clamping nut which is accommodated on an external thread and is suitable for supporting itself on the upper end face of the plug body and possibly the insert sleeve, possibly with the interposition of a washer.
  • both the support rod and the plug body can be one in this alternative embodiment of the invention Have longitudinal bore for the supply of gas in the molten metal. As previously discussed, the necessary sealing can be provided.
  • the insert sleeve In order to give the insert sleeve the required cross-sectional dimensions for absorbing the forces occurring when the lifting mechanism is actuated, it is preferably arranged in an optionally enlarged, blind hole-like end section of the longitudinal bore of the plug body, which widens to form the ring recess.
  • the insert sleeve is aligned in its clamping position at its upper end with the upper end of the stopper body or is set back slightly, so that the required degree of sealing of the insert sleeve with respect to the stopper body is achieved in the region of the peripheral flange.
  • additional sealing rings can be provided between the mutually assigned end faces of the plug body on the one hand and the washer or clamping nut on the other and / or insert sleeve on the one hand and washer or clamping nut on the other.
  • the insert sleeve can consist of metal, for example steel, in the usual way. But it is also possible to use them e.g. to produce refractory material, which preferably has higher strength values than the refractory material of the plug body, in order to be able to withstand the tensile and compressive forces acting when the lifting mechanism is actuated.
  • FIG. 1 in a vertical section of an embodiment of the invention
  • FIG. 2 shows a plan view of the stopper body from direction A of FIG. 1 after removal of the holding rod
  • FIG. 4 is an illustration corresponding to FIG. 1 for an alternative
  • FIG 5 shows a vertical section of the upper section of the plug body after a first manufacturing step of molding the insert sleeve into the plug body.
  • the stopper for the closure of containers holding molten metal has in this case a rod-shaped stopper body 1 made of refractory material.
  • the plug body 1 has an optionally enlarged bore 3 on the end face, which continues essentially coaxially in a longitudinal bore 16, which extends for this gas supply to the molten metal up to the free end of the plug body 1.
  • the bore 3 serves for the releasable engagement of a metal holding rod 4, for example, for attachment to a lifting mechanism (not shown) so that the plug can be used as a valve member of a closure on the bottom of the container holding the molten metal.
  • the Haltesta ⁇ ge 4 has at its lower fastening end 5 two diametrically opposed, from the circumference of the support rod 4 radially outwardly projecting cylindrical peg-shaped locking projections 6.
  • the locking projections 6 can be converted into an axial position by longitudinal slots 7 of the plug body 1 which are offset by 180 ° to one another are, in which the locking projections 6 can be rotated in a space 10 provided below a lower end face 9 of the stopper body 1 with the holding rod 4, in particular into a position in which they have locking recesses 8 open to the lower end face 9 of the insert sleeve 2 are aligned and by pulling the support rod 4 axially upward into these locking recesses 8 and, if necessary, can snap into place. In this way, rotation of the stopper body 1 relative to the holding rod 4 is prevented.
  • stopper body 1 and support rod 4 assume a defined axial position with respect to one another.
  • both parts can be braced axially against one another.
  • the support rod 4 carries an external thread 11 for receiving a clamping nut 12 in any case in an area which protrudes from the plug body 1.
  • the clamping nut 12 is suitable for being supported on the upper end face 14 of the plug body 1 with the interposition of a washer 13.
  • both the plug body 1 and the holding rod 4 have continuous longitudinal bores 3, 16 and 17 for the supply of the gas.
  • the respective bores 3, 6, 17 are in flow connection with one another via the free space 10 and are axially aligned with one another. If there are more than two locking projections 6, these are likewise arranged at the same angular distance over the circumference of the holding rod 4, that is to say, for example, three locking projections 6 at a distance of 120 °.
  • the required tightness is achieved in particular when the holding rod 4 is axially clamped on the stopper body 1 by means of the clamping nut 12.
  • an insert sleeve 2 at a distance from the upper end of the stopper body 1 has a radial recess 27 projecting into an annular recess 27 adjacent to the longitudinal bore 16
  • Circumferential flange 20 which is suitable for sealingly resting with its upper end face 21 on the correspondingly assigned ring surface 23 of the plug body 1.
  • a temperature-resistant sealing ring 19 e.g. in the form of a ceramic compressible fiber seal.
  • the insert sleeve 2 can be axially clamped relative to the plug body 1.
  • the peripheral flange 20 comes to lie in the ring recess 27 of the plug body 1, which has a greater axial height than the peripheral flange 20 itself.
  • this is done in that at the Molding or shaping the insert sleeve 2 from metal or metal-coated ceramic material forms a ring body 26 made of a burn-out material, such as polypropylene, which is arranged directly adjacent to the peripheral flange 20 and has the same outside diameter as this.
  • the ring body 26 When burning the stopper body 1, the ring body 26 is burned out, so that the circumferential flange 20 in the ring recess 27 and thus the insert sleeve 2 in the end section 18 of the longitudinal bore 16 can move axially relative to the stopper body 1 overall.
  • the insert sleeve 2 can be detachably connected to the lower end of the holding rod 4, for example by screwing.
  • the holding rod 4 has an external thread 11 and the insert sleeve 2 has an internal thread 25 in its upper region.
  • a clamping nut 12 can be accommodated on the external thread 11 of the holding rod 4, which is suitable for interposing a U ⁇ teriegringes 13 on the upper Support end face 14, 15 of the plug body 1 or the insert sleeve 2.
  • both the stopper body 1 and the holding rod 4 have continuous longitudinal bores 16, 17 for the supply of a gas into the molten metal.
  • the bores 3, 16, 17 mentioned are in flow connection with one another via the ring recess 27 and are axially aligned with one another.
  • the insert sleeve 2 is arranged in an enlarged blind hole-like upper end section 18 of the longitudinal bore 16 of the stopper body 1, so that the insert sleeve 2 can be given the required cross-sectional dimensioning.
  • the insert sleeve 2 does not need to be made of metal, it can also be formed from metal-coated refractory material and formed together with the remaining part of the stopper body 1, the stopper body 1 in the insert sleeve 2 then preferably made of refractory material of higher quality, ie higher tension - And compressive strength is formed in order to be able to absorb the tensile and compressive forces that occur, which must be transmitted when the lifting mechanism is actuated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

L'invention concerne un bouchon permettant de fermer des cuves contenant des métaux en fusion, qui comporte un corps en matériau réfractaire, par ex. sous forme de tige, muni d'un alésage prévu pour l'insertion amovible d'une tige de maintien par ex. métallique, à appliquer sur un mécanisme de levage. A son extrémité de fixation, ladite tige de maintien comporte au moins deux parties saillantes de verrouillage, diamétralement opposées, en saillie vers l'extérieur dans le sens radial depuis le pourtour de la tige de maintien. Ces parties saillantes de verrouillage peuvent passer par des fentes longitudinales correspondantes à décalage angulaire mutuel, qui jouxtent l'alésage, dans une position axiale où la tige de maintien peut tourner par rapport au corps du bouchon avec les parties saillantes de verrouillage, jusque dans une position où les parties saillantes de verrouillage peuvent entrer par déplacement dans le sens axial en direction de l'extrémité supérieure du corps du bouchon, dans des cavités d'arrêt en décalage angulaire correspondant. L'invention concerne également une autre variante dudit bouchon.
PCT/EP1999/003145 1998-05-29 1999-05-07 Bouchon pour fermer des cuves contenant des metaux en fusion WO1999062659A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU40389/99A AU4038999A (en) 1998-05-29 1999-05-07 Bott for sealing vessels containing molten metal
DE59902127T DE59902127D1 (de) 1998-05-29 1999-05-07 Stopfen für den verschluss von metallschmelze aufnehmenden behältnissen
EP99923554A EP1079947B1 (fr) 1998-05-29 1999-05-07 Bouchon pour fermer des cuves contenant des metaux en fusion

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823988.2 1998-05-29
DE19823988A DE19823988C2 (de) 1998-05-29 1998-05-29 Stopfen für den Verschluß von Metallschmelze aufnehmenden Behältnissen

Publications (1)

Publication Number Publication Date
WO1999062659A1 true WO1999062659A1 (fr) 1999-12-09

Family

ID=7869251

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/003145 WO1999062659A1 (fr) 1998-05-29 1999-05-07 Bouchon pour fermer des cuves contenant des metaux en fusion

Country Status (6)

Country Link
EP (2) EP1177845B1 (fr)
AU (1) AU4038999A (fr)
DE (3) DE19823988C2 (fr)
ES (2) ES2203571T3 (fr)
TW (1) TW407080B (fr)
WO (1) WO1999062659A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1106284A1 (fr) * 1999-12-11 2001-06-13 TYK Europe GmbH Système d'étanchéité pour quenouille
US6540009B1 (en) 2000-08-25 2003-04-01 Akechi Ceramics Kabushiki Kaisha Holding structure for continuous casting long stopper
CA2319290A1 (fr) * 2000-09-14 2002-03-14 Akechi Ceramics Kabushiki Kaisha Structure de support pour long bouchon de moulage continu
EP1621270B1 (fr) * 2004-07-29 2006-07-26 Refractory Intellectual Property GmbH & Co. KG Quenouille à corps allongé
AT524495A1 (de) * 2020-10-09 2022-06-15 Sheffield Hi Tech Refractories Germany Gmbh Stopfen

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2005311A (en) * 1934-07-06 1935-06-18 American Sheet & Tin Plate Stopper rod for ladles
US4791978A (en) * 1987-11-25 1988-12-20 Vesuvius Crucible Company Gas permeable stopper rod
EP0358535A2 (fr) * 1988-12-29 1990-03-14 Vesuvius France S.A. Quenouille monobloc
WO1990008611A1 (fr) * 1989-01-26 1990-08-09 Thor Ceramics Limited Rotor
DE9109532U1 (fr) * 1991-08-01 1991-10-10 Radex-Heraklith Industriebeteiligungs Ag, Wien, At
GB2247637A (en) * 1990-08-11 1992-03-11 Thor Ceramics Ltd Stoppers for use in molten metal handling
DE4028793A1 (de) * 1990-09-11 1992-03-12 Didier Werke Ag Einrichtung zum halten eines stopfens bei einem metallurgischen gefaess sowie stopfen fuer eine solche einrichtung
DE4040388A1 (de) * 1990-12-17 1992-07-02 Didier Werke Ag Einrichtung zum halten eines stopfens fuer ein metallurgisches gefaess und stopfen hierfuer
DE4324768C1 (de) * 1993-07-23 1994-08-25 Labod Burkhard Anordnung zur Verbindung einer Stopfenstange für ein metallurgisches Gefäß mit ihrer Hebevorrichtung und für die Anordnung geeignete Stopfenstange sowie Verfahren zur Herstellung der Anordnung
DE4444617A1 (de) * 1994-12-15 1996-06-27 Burkhard Labod Anordnung zur Verbindung einer Stopfenstange für ein metallurgisches Gefäß mit ihrer Hebevorrichtung
WO1998000255A1 (fr) * 1996-07-02 1998-01-08 Foseco International Limited Quenouille

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212450A1 (de) * 1991-11-26 1993-05-27 Didier Werke Ag Einrichtung zum halten eines stopfens und stopfen

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2005311A (en) * 1934-07-06 1935-06-18 American Sheet & Tin Plate Stopper rod for ladles
US4791978A (en) * 1987-11-25 1988-12-20 Vesuvius Crucible Company Gas permeable stopper rod
EP0358535A2 (fr) * 1988-12-29 1990-03-14 Vesuvius France S.A. Quenouille monobloc
WO1990008611A1 (fr) * 1989-01-26 1990-08-09 Thor Ceramics Limited Rotor
GB2247637A (en) * 1990-08-11 1992-03-11 Thor Ceramics Ltd Stoppers for use in molten metal handling
DE4028793A1 (de) * 1990-09-11 1992-03-12 Didier Werke Ag Einrichtung zum halten eines stopfens bei einem metallurgischen gefaess sowie stopfen fuer eine solche einrichtung
DE4040388A1 (de) * 1990-12-17 1992-07-02 Didier Werke Ag Einrichtung zum halten eines stopfens fuer ein metallurgisches gefaess und stopfen hierfuer
DE9109532U1 (fr) * 1991-08-01 1991-10-10 Radex-Heraklith Industriebeteiligungs Ag, Wien, At
DE4324768C1 (de) * 1993-07-23 1994-08-25 Labod Burkhard Anordnung zur Verbindung einer Stopfenstange für ein metallurgisches Gefäß mit ihrer Hebevorrichtung und für die Anordnung geeignete Stopfenstange sowie Verfahren zur Herstellung der Anordnung
DE4444617A1 (de) * 1994-12-15 1996-06-27 Burkhard Labod Anordnung zur Verbindung einer Stopfenstange für ein metallurgisches Gefäß mit ihrer Hebevorrichtung
WO1998000255A1 (fr) * 1996-07-02 1998-01-08 Foseco International Limited Quenouille

Also Published As

Publication number Publication date
EP1177845A1 (fr) 2002-02-06
DE59906467D1 (de) 2003-09-04
EP1079947B1 (fr) 2002-07-24
DE19823988C2 (de) 2000-07-20
EP1079947A1 (fr) 2001-03-07
DE59902127D1 (de) 2002-08-29
DE19823988A1 (de) 1999-12-09
EP1177845B1 (fr) 2003-07-30
AU4038999A (en) 1999-12-20
ES2203571T3 (es) 2004-04-16
TW407080B (en) 2000-10-01
ES2183556T3 (es) 2003-03-16

Similar Documents

Publication Publication Date Title
DE3018158C2 (de) Preßluftarmatur
EP0549629B1 (fr) Element combustible a extremite de barreau bloquee a la base
DE3429424C2 (fr)
EP2318723B1 (fr) Agencement de fixation avec compensation des tolerances
EP0728979A1 (fr) Raccord étanche entre un tuyau en matière plastique et une pièce de raccordement fabriquée en métal
DE4008964A1 (de) Behaelter mit mindestens einem einer fuelloeffnung zugeordneten, verschliessbaren rohrstutzen
EP2532568A2 (fr) Dispositif de fixation d'un composant, par exemple d'une rambarde, sur une carrosserie de véhicule
DE2818512C3 (de) Zentralverschluß für Scheibenräder
DE19528557C2 (de) Gestell zur Befestigung von Gasflaschen
WO1999062659A1 (fr) Bouchon pour fermer des cuves contenant des metaux en fusion
DE2835435A1 (de) Federhaenger bzw. -stuetze, insbesondere fuer rohrleitungen
EP0348740B1 (fr) Raccord à vis capable de télécommande
EP2176095A1 (fr) Module airbag comportant un sac gonflable et un générateur de gaz de forme tubulaire pouvant être fixé sur un boîtier du module
DE4319054A1 (de) Kunststoffhalter, insbesondere für Dachbefestigungen
DE2816908C2 (de) Formschlüssig gesicherte Achsbolzenverbindung
EP0285686B1 (fr) Tuyau d'aspiration pour une machine de coulée sous pression sour vide
EP0462052B1 (fr) Collier de serrage pour tuyau
EP0145795A1 (fr) Roue pivotante à support amovible
EP0461340B1 (fr) Busette de coulée pour obturateur coulissant
WO1999062658A1 (fr) Bouchon pour fermer des cuves contenant des metaux en fusion
WO2004012892A1 (fr) Dispositif de serrage pour vehicules
WO1995014148A1 (fr) Paumelle de porte ou de fenetre
DE3144893A1 (de) Haltevorrichtung fuer eine handbrause
DE3317146A1 (de) Keilgetriebe
DE19844264C1 (de) Selbstdichtendes Entlüftungsventil für Hubschrauber-Tankanlagen

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 1999923554

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: KR

WWP Wipo information: published in national office

Ref document number: 1999923554

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA

WWG Wipo information: grant in national office

Ref document number: 1999923554

Country of ref document: EP