WO1998040574A1 - Element de construction de surface insonorisant - Google Patents

Element de construction de surface insonorisant Download PDF

Info

Publication number
WO1998040574A1
WO1998040574A1 PCT/DE1998/000669 DE9800669W WO9840574A1 WO 1998040574 A1 WO1998040574 A1 WO 1998040574A1 DE 9800669 W DE9800669 W DE 9800669W WO 9840574 A1 WO9840574 A1 WO 9840574A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
surface component
sand
quartz
powder
Prior art date
Application number
PCT/DE1998/000669
Other languages
German (de)
English (en)
Inventor
Karl Jun. Limberger
Original Assignee
Limberger Karl Jun
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 Limberger Karl Jun filed Critical Limberger Karl Jun
Priority to DE59806536T priority Critical patent/DE59806536D1/de
Priority to EP98919047A priority patent/EP0966579B1/fr
Priority to AU72041/98A priority patent/AU7204198A/en
Priority to AT98919047T priority patent/ATE229115T1/de
Publication of WO1998040574A1 publication Critical patent/WO1998040574A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B2001/742—Use of special materials; Materials having special structures or shape
    • E04B2001/747—Corrugated materials
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B2001/742—Use of special materials; Materials having special structures or shape
    • E04B2001/748—Honeycomb materials

Definitions

  • the invention relates to a sound absorbing
  • Such a sound-absorbing surface component is known from DE 29 53 356 Cl.
  • a spherical metallic material is used there as a filler.
  • This metallic material can be steel balls.
  • the grain size scatter of the spherical metallic material is small in order to achieve a regular bed, i.e. avoid setting or sagging of the filling material.
  • the filling of the channel spaces with metallic material results in a surface component with high manufacturing costs.
  • a sound-absorbing surface component with a central surface element which has filling spaces provided closely next to one another and parallel to one another.
  • the central surface element is closed at the top and bottom by cover plates; it forms a spacer, the filling spaces provided closely next to one another being filled with a filler.
  • This filler can be a foamed one Trade plastic such as polyester or polyurethane.
  • the invention has for its object to provide a sound-absorbing surface component of the type mentioned, which is simple and inexpensive to implement and which has good sound insulation properties.
  • the corrugated cardboard is closed at its two open end faces and that the filler consists of powder material and sand material or granules. It is useful in the sound-absorbing surface component if the corrugated cardboard surface element has at least two corrugated webs which are connected to one another in such a way that the channel spaces of the adjacent corrugated webs intersect, and that the filler consists of an immovable sand material interlocking in the channel spaces and one between the sand material provided, limited mobility powder material.
  • the corrugated cardboard surface element has three corrugated paths.
  • the middle wave path can have a smaller wave height than the two outer wave paths.
  • Such a sheet of corrugated cardboard is known, for example, from a brochure from Wellpappe Ansbach Duropack Deutschen mbH, 91522 Ansbach, under the name X-PLY (brand of Kartonex Ges. MbH).
  • This well-known corrugated sheet surface element has so far been used as packaging material for granule silos, liquid packaging, in mechanical and plant engineering the electrical industry, for heavy goods, etc. for use.
  • Such a corrugated sheet surface element is available inexpensively; in combination with the sand material and powder material filling the channel spaces of such a corrugated sheet surface element, the result is, according to the invention, a self-supporting, sturdy flat construction element with excellent sound insulation properties.
  • the mixing ratio of sand material to powder material is preferably of the order of magnitude 5: 2.
  • Sound waves become quasi pyramid-shaped as a passive sound funnel through the intersecting wave paths of the corrugated cardboard sheet element used according to the invention, i.e. the impinging sound waves are often deflected. This results in damping as a result of the defined sound introduction into the mass of the filler which actually has a sound-absorbing effect.
  • the soundproofing surface component according to the invention also has an excellent external compression pressure resistance and an excellent internal burst pressure resistance:
  • the filling material - as has already been mentioned - preferably has quartz sand with a defined grain size.
  • This quartz sand forms in the Channel spaces of the intersecting wave paths an immobile grain structure.
  • This grain structure guarantees a defined introduction of sound energy into the interior of the surface component.
  • the quartz sand provides a defined mass structure which, in combination with the corrugated sheet surface element used according to the invention, results in a homogeneous effectiveness of the damping, ie the internal damping, which is not interrupted by any weak point.
  • the aforementioned grain structure made of the immovable quartz sand which interlocks in the channel spaces at the same time ensures the physical load and compressive strength of the soundproofing surface component according to the invention.
  • the quartz sand and the quartz powder are mixed in a defined ratio in such a way that the quartz powder fills the interstices of the grain structure made of quartz sand, but still remains freely movable in these interstices.
  • the use of quartz sand and quartz powder with defined bulk densities and grain sizes or finenesses advantageously ensures that the sound insulation is frequency-covering, in particular because the freely movable quartz powder in the space between the immobile quartz sand leads to the acoustic vibration oscillating accordingly Movement of the quartz flour converts, the vibration energy being damped accordingly.
  • Exemplary embodiments of the soundproofing surface component according to the invention are shown in the drawing and are described below. Show it: 1 in sections in a spatial representation a first embodiment of the sound-absorbing surface component,
  • Fig. 2 shows a second embodiment of the sound absorbing
  • FIG. 3 shows a third embodiment of the sound-absorbing surface component in sections in a perspective view
  • FIG. 4 in sections in an enlarged perspective view, not drawn to scale, a corner area of a preferred
  • FIG. 5 further enlarged, not to scale, a view of the sound-absorbing surface component according to FIG. 4 in the direction of the arrow V, i.e. in a front view.
  • Fig. 1 shows in sections in a spatial representation a first embodiment of the sound-absorbing surface component 10 with a surface element 12 ', which consists of a layer of corrugated cardboard 14'.
  • the corrugated cardboard 14 ' defines closely adjacent and mutually parallel channel spaces 16' which are filled with a filler 18 '.
  • the two open end faces 20 ' are each tightly closed.
  • FIG. 2 shows, in a representation similar to FIG. 1, a second embodiment of the sound-absorbing surface component 10, which differs from the surface component 10 shown in FIG. 1 in particular. differs in that not only one layer of corrugated cardboard is provided, but that the surface component 10 has two layers of corrugated cardboard 14 'which are connected to one another to form a unit.
  • FIG. 2 The same details are designated in FIG. 2 with the same reference numerals as in FIG. 1, so that it is not necessary to describe all of these details in detail again in connection with FIG. 2.
  • Another difference between the embodiment of the sound-absorbing surface component 10 shown in FIG. 1 and the embodiment shown in FIG. 2 is that in the surface component 10 shown in FIG. 2 the two opposite end surfaces 20 ', of which only in FIG. 2 one end surface 20 'is shown in the drawing, is sealed tightly by means of an adhesive layer 24' in order to captively fix the filler 18 'in the channel spaces 16'.
  • FIG. 3 shows in sections in a spatial representation a third embodiment of the soundproofing surface component 10, in which the surface element 12 'has a honeycomb cross-sectional structure, by means of which closely adjacent and mutually parallel channel spaces 16' are defined which are filled with a filler 18 ' .
  • the filler 18 ' is a powder and sand or granules.
  • the two opposite end surfaces 20' are also sealed in the embodiment of the sound-absorbing surface component 10 shown in FIG. 3, which is done by means of an adhesive strip 22 '(as shown in FIG. 1) or by means of an adhesive layer 24'. can be realized as shown in Fig. 2.
  • a sound-absorbing surface component 10 results which is simple to manufacture and which is easy to process.
  • the surface component 10 can be provided in a flat or wound web shape or preferably in a plate shape, it can be used both in the floor area and in the wall or ceiling area.
  • FIGS. 4 and 5 show a very particularly preferred embodiment of the sound-absorbing surface component 10, which has a central wave path 12 and two outer wave paths 14 and 16.
  • a surface component 10 is - as mentioned above - known per se, it has so far been used as packaging material.
  • the outer corrugated path 14 has, for example, an inner ceiling 18, a so-called A-shaft 20 without indentation and an intermediate layer 22, which is also part of the central corrugated path 12.
  • the central wave path 12 has a so-called C-wave 24 without indentation connected to the intermediate layer 22 and an intermediate layer 26 which is at the same time part of the outer wave path 16.
  • Said intermediate layer 26 is connected to an A-shaft 20 without drawing in.
  • the outer wave path 16 is closed by an outer cover 28.
  • the inner ceiling 18, the Intermediate layers 22 and 26 and the outer layer 28 consist for example of a so-called kraft liner and the two A-waves 20 without indentation and the C-wave 24 without indentation consist for example of a semi-pulp.
  • Table 1 the basis weights of the individual layer components of the surface component 10 are given as examples.
  • the weight per unit area of the corrugated sheet surface element according to Table 1 is, for example, a total of 1,877 g / m.
  • the layer components of the corrugated sheet surface element are bonded e.g. using a suitable glue in an inline lamination process.
  • the internal compressive strength or the bursting compressive strength is very important if the channel spaces are in danger of expanding or deforming due to the weight of the heavyweight filling.
  • the dimensional accuracy and strength of the Ceiling and intermediate layers of the surface element are decisive over long periods of time. Without this dimensional accuracy of the corrugated sheet-like element used according to the invention, neither the grain structure nor the limitedly movable material contained therein can have a defined effect, because voids would form.
  • inline lamination of the corrugated sheet surface element of the order of 300 g / m is sufficient for floor panels
  • inline lamination of the corrugated sheet surface elements of at least 700 g / is required for wall panels and for suspended ceiling panels.
  • FIG. 4 also illustrates by cross-hatching a closure coating 30 and 32, through which the channel spaces 34 of the central wave path 12 and the channel spaces 36 of the two outer wave paths 14 and 16 are closed at their open ends, that is to the outside.
  • FIG. 5 illustrates a section of the surface component 10, the closure coating 30 being shown partially broken open in order to illustrate the filler 38 with which the channel spaces 34 and 36 of the surface component 10 are filled.
  • the filler 38 consists of quartz sand 40, 42, the quartz sand 40 being provided in the channel spaces 36 of the two outer wave paths 14 and 16 and the quartz sand 42 in the middle wave path 12.
  • the quartz sand 40, 42 is provided in the corresponding channel space 36, 34 in such a way that it is interlocked and consequently immovable.
  • the space between the respective quartz sand 40, 42 is filled with quartz powder 44, 46.
  • the quartz powder 44, 46 is provided with limited mobility in the respective space.
  • Table 2 gives an example of numerical data on the grain size and fineness of grinding and on the bulk density of quartz sand and quartz powder in the middle wave path and in the two outer wave paths oriented perpendicular to the middle wave path.
  • Grain size (approx.) 0.1 - 0.5 mm 0.08 - 0.2 mm of the grain structure
  • each of the two A-waves i.e. of the two outer wave paths 14 and 16 is e.g. approx. 3.5 mm and the height of the middle wave track 12 is e.g. approx. 2.0 mm.
  • the surface component 10 is also possible.
  • suitable other materials of appropriate grain size or grinding fineness as filler 38 instead of the quartz sand and quartz powder described above.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

L'invention concerne un élément de construction de surface insonorisant (10) formé par un élément de surface en carton ondulé présentant des canaux (34, 36) très proches les uns des autres, parallèles et remplis d'une matière de remplissage constituée de poudre et de sable ou de granulés, lesdits canaux (34, 36) étant obturés à leurs extrémités. L'élément de surface en carton ondulé présente, de préférence, des bandes de papier à cannelures (12, 14, 16) qui sont reliées les unes aux autres, de sorte que les canaux (34, 36) des bandes de papier à cannelures (12, 14, 16) voisines se croisent. De préférence, l'élément de surface en carton ondulé présente trois bandes de papier à cannelures (12, 14, 16), la bande de papier à cannelures centrale (12) ayant des cannelures d'une profondeur plus petite que celle des deux bandes de papier à cannelures extérieures (14, 16). La matière de remplissage (38) comporte du sable, de préférence du sable silicieux (40, 42), qui s'accroche dans les canaux (34, 36) et devient ainsi immobile. Ladite matière de remplissage (38) comporte en outre, dans le sable silicieux (40, 42), de la poudre, à savoir de la poudre de quartz (44, 46), dont le déplacement est limité.
PCT/DE1998/000669 1997-03-08 1998-03-06 Element de construction de surface insonorisant WO1998040574A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59806536T DE59806536D1 (de) 1997-03-08 1998-03-06 Schalldämmendes flächenbauelement
EP98919047A EP0966579B1 (fr) 1997-03-08 1998-03-06 Element de construction de surface insonorisant
AU72041/98A AU7204198A (en) 1997-03-08 1998-03-06 Sound-proofing surface component
AT98919047T ATE229115T1 (de) 1997-03-08 1998-03-06 Schalldämmendes flächenbauelement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19709620.4 1997-03-08
DE19709620A DE19709620A1 (de) 1997-03-08 1997-03-08 Schalldämmendes Flächenbauelement

Publications (1)

Publication Number Publication Date
WO1998040574A1 true WO1998040574A1 (fr) 1998-09-17

Family

ID=7822727

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/000669 WO1998040574A1 (fr) 1997-03-08 1998-03-06 Element de construction de surface insonorisant

Country Status (5)

Country Link
EP (1) EP0966579B1 (fr)
AT (1) ATE229115T1 (fr)
AU (1) AU7204198A (fr)
DE (2) DE19709620A1 (fr)
WO (1) WO1998040574A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011072867A1 (fr) * 2009-12-19 2011-06-23 Michael Wolf Composant plat et son utilisation
DE202013005985U1 (de) 2012-07-06 2013-08-27 Michael Egger Dämmplatte
US9103115B2 (en) * 2010-12-08 2015-08-11 Wolf Bavaria Gmbh Sheet-like finishing element
US20180347183A1 (en) * 2017-05-30 2018-12-06 Walter SANTI Thermoacoustic soundproofing panel

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19882737T1 (de) * 1997-10-07 2000-09-21 Besin Bv Verfahren zum Herstellen einer Wand
DE102007019023B4 (de) * 2007-04-17 2009-02-26 Nützel, Bernd Schallentkoppelndes Auflager
DE102008055978A1 (de) * 2008-11-05 2010-05-06 Brecht, Wido E. Platten-Unterbau zum flächigen Verlegen von Rohrleitungen für Heiz- Kühl- oder Absorberzwecke, zum Beispiel für Fußboden- oder Wandheizungen sowie Verfahren zur Herstellung einer solchen Heizung
DE102009021392A1 (de) * 2009-05-14 2010-11-18 Goritzka, Manfred, Dipl.-Ing. Holzbalkendecke
DE202011105663U1 (de) 2011-09-14 2011-12-05 Jörn Dasse Dämmplattenanordnung, insbesondere Stufen-Dämmplatte, und Dämmvorrichtung
DE102012000346A1 (de) 2012-01-11 2013-07-11 Cald'or - Energy Gmbh Unterbau-Platte
DE102012000347A1 (de) 2012-01-11 2013-07-11 Cald'or - Energy Gmbh Trittschalldämmplatte
ITPI20130048A1 (it) 2013-06-04 2014-12-05 Rolando Masini Struttura perfezionata di materiale composito fonoisolante
FR3101995B1 (fr) * 2019-10-09 2023-10-13 Michel Wolf Dispositif d’absorption acoustique

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211370B (de) * 1960-11-12 1966-02-24 Fraunhofer Ges Forschung Luftschalldaemmung dynamisch biegeweicher Schalen, wie Wandschalen, Unterdecken, Tueren, Schallabschirmmungen und Flaechenelement hierfuer
FR2077686A1 (fr) * 1970-02-05 1971-11-05 Bertin & Cie
DE1784187A1 (de) * 1968-07-16 1972-03-16 Fraunhofer Ges Forschung Plattenfoermiges,schalldaemmendes,zweischalig aufgebautes Bauelement mit Schuettgutfuellung
DE2458260A1 (de) * 1974-12-10 1976-06-16 Karlheinz Schulz Bauelement
CH579691A5 (fr) 1973-07-19 1976-09-15 Ferma
DE2706598A1 (de) * 1977-02-16 1978-08-17 Richard J Dietrich Vorgefertigtes hohles bauelement
GB2109902A (en) * 1981-04-29 1983-06-08 Gundernhausen Chemie Noise reduction material
DE2953356C1 (de) 1978-12-11 1991-05-02 Hawa Ag Bauelement fuer die Luftschalldaemmung
JPH03240526A (ja) * 1990-02-20 1991-10-25 Takashi Hoshi 重量シート
DE4027310A1 (de) * 1990-08-29 1992-03-05 Boegl Max Bauunternehmung Gmbh Schallschutzsystem

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211370B (de) * 1960-11-12 1966-02-24 Fraunhofer Ges Forschung Luftschalldaemmung dynamisch biegeweicher Schalen, wie Wandschalen, Unterdecken, Tueren, Schallabschirmmungen und Flaechenelement hierfuer
DE1784187A1 (de) * 1968-07-16 1972-03-16 Fraunhofer Ges Forschung Plattenfoermiges,schalldaemmendes,zweischalig aufgebautes Bauelement mit Schuettgutfuellung
FR2077686A1 (fr) * 1970-02-05 1971-11-05 Bertin & Cie
CH579691A5 (fr) 1973-07-19 1976-09-15 Ferma
DE2458260A1 (de) * 1974-12-10 1976-06-16 Karlheinz Schulz Bauelement
DE2706598A1 (de) * 1977-02-16 1978-08-17 Richard J Dietrich Vorgefertigtes hohles bauelement
DE2953356C1 (de) 1978-12-11 1991-05-02 Hawa Ag Bauelement fuer die Luftschalldaemmung
GB2109902A (en) * 1981-04-29 1983-06-08 Gundernhausen Chemie Noise reduction material
JPH03240526A (ja) * 1990-02-20 1991-10-25 Takashi Hoshi 重量シート
DE4027310A1 (de) * 1990-08-29 1992-03-05 Boegl Max Bauunternehmung Gmbh Schallschutzsystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 16, no. 30 (M - 1203) 24 January 1992 (1992-01-24) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011072867A1 (fr) * 2009-12-19 2011-06-23 Michael Wolf Composant plat et son utilisation
US9103115B2 (en) * 2010-12-08 2015-08-11 Wolf Bavaria Gmbh Sheet-like finishing element
DE202013005985U1 (de) 2012-07-06 2013-08-27 Michael Egger Dämmplatte
US20180347183A1 (en) * 2017-05-30 2018-12-06 Walter SANTI Thermoacoustic soundproofing panel

Also Published As

Publication number Publication date
AU7204198A (en) 1998-09-29
EP0966579A1 (fr) 1999-12-29
EP0966579B1 (fr) 2002-12-04
DE19709620A1 (de) 1998-09-24
DE59806536D1 (de) 2003-01-16
ATE229115T1 (de) 2002-12-15

Similar Documents

Publication Publication Date Title
DE2946392C2 (de) Schallisolierendes Wandelement
WO1998040574A1 (fr) Element de construction de surface insonorisant
DE2408028C3 (fr)
EP0531761A1 (fr) Absorbeur
WO2006128632A1 (fr) Structure sandwich a comportement de double paroi selective en frequence
DE102005014577A1 (de) Verbundelement
EP2655744B1 (fr) Élément d'insonorisation
DE1211370B (de) Luftschalldaemmung dynamisch biegeweicher Schalen, wie Wandschalen, Unterdecken, Tueren, Schallabschirmmungen und Flaechenelement hierfuer
EP3418461A1 (fr) Élément d'absorption de bruit
DE19809849C2 (de) Schalldämmendes Flächenbauelement
AT397529B (de) Verbundfolie
DE60218060T3 (de) Trennwandelement für trennwände und dergleichen mit einer füllung aus wärmeisolierendem material, insbesondere mineralwolle
EP1597442B1 (fr) Cloison a deux parois comprenant une matiere de remplissage en laine de roche
CH683855A5 (de) Schallabsorptionsplatte.
DE4000132C2 (fr)
EP3935624B1 (fr) Absorbeur acoustique, structure et utilisation d'un absorbeur acoustique
DE2739748A1 (de) Schallschluckende platte
DE202010009100U1 (de) Wärme- und Schalldämmmatte
EP1736603B1 (fr) Mur antibruit
DE102019128209A1 (de) Schallabsorbierende Vorrichtung mit Noppenfolienverbund
DE19822840C2 (de) Mehrschichtiges Bauteil mit erhöhter Luft- und Trittschalldämmung
DE202004010158U1 (de) Steinkorb zur Erstellung einer Schallschutzwand
DE4117740C1 (en) Friction face damping lining for thin-wall component - which carries platelets, each with foot protruding transversely to flat side
DE2607603A1 (de) Traeger, insbesondere vlies zur schalldaemmung
DE19502760C2 (de) Bauelement mit Schichtaufbau

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 DK EE ES FI GB GE GH GM GW HU ID IL 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 SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

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

Ref document number: 1998919047

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1998919047

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1998539073

Format of ref document f/p: F

NENP Non-entry into the national phase

Ref country code: CA

WWG Wipo information: grant in national office

Ref document number: 1998919047

Country of ref document: EP