EP1357237B1 - Sound absorbent panel and related manufacturing method - Google Patents

Sound absorbent panel and related manufacturing method Download PDF

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Publication number
EP1357237B1
EP1357237B1 EP03009072A EP03009072A EP1357237B1 EP 1357237 B1 EP1357237 B1 EP 1357237B1 EP 03009072 A EP03009072 A EP 03009072A EP 03009072 A EP03009072 A EP 03009072A EP 1357237 B1 EP1357237 B1 EP 1357237B1
Authority
EP
European Patent Office
Prior art keywords
plate
grooves
plates
panel according
panel
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
EP03009072A
Other languages
German (de)
French (fr)
Other versions
EP1357237A3 (en
EP1357237A2 (en
Inventor
Giuseppe c/o PREAM S.R.L. Morelli
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.)
PREAM Srl
Original Assignee
PREAM Srl
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 PREAM Srl filed Critical PREAM Srl
Priority to SI200331436T priority Critical patent/SI1357237T1/en
Publication of EP1357237A2 publication Critical patent/EP1357237A2/en
Publication of EP1357237A3 publication Critical patent/EP1357237A3/en
Application granted granted Critical
Publication of EP1357237B1 publication Critical patent/EP1357237B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • 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
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/849—Groove or slot type openings

Definitions

  • the present invention relates to a sound absorbent panel for covering walls, ceilings and floors of rooms and premises and to a manufacturing method of said panel.
  • the main drawback of said known elements consists in their weight and encumbrance, due to the high thickness required to achieve a suitable insulation and in the need to cover said elements to confer them an acceptable aesthetical aspect.
  • the main drawback of said known panels consists in that they provide an inadequate sound proofing and insufficient reduction of the echo.
  • the drawback of the known panel manufacturing methods consists in that the known elements are very expensive, because of the manufacturing complexity for carrying out protrusion and/or cavities.
  • Document DE622470 discloses a sound absorbent panel comprising two or more row of spaced apart strips.
  • Document EP0745738 discloses an acoustic panel made from a triple-layered solid wooden board with two cover layers parallel to each other in relation to the fibre direction and one centre layer running across it.
  • the cover layer on the room side has longitudinally aligned slits reaching to the centre layer.
  • the centre layer has on its side facing this slit layer grooves crossing the slits.
  • the grooves and slits criss-cross at right angles.
  • the slits and/or grooves can have a rectangular, rounded, triangular or chamfered cross- section.
  • the other cover layer can also have slits aligned with those of the room-facing layer.
  • Document AT 6097 U1 and document JP-A-02178447 disclose a panel a face of which has grooves parallel each other and with depth smaller than the thickness of the plate and bigger than half of said thickness.
  • the other face has identica! grooves orthogonal to the grooves of the first mentioned face.
  • the crosses of grooves form passing holes.
  • Document JP-A-02178447 further discloses (see Figure 8) a sound absorbing decorative panel made of two plate body each with respective grooves formed at preset interval and with the depth of the grooves on one face of each plate body reaching nearly one half of the thickness of the plate body.
  • the plate body are stuck while the respective grooves are matched with each other forming hollow stripe holes.
  • the grooves on the opposite face of one of the plate bodies have a depth equal to the thickness of this plate body.
  • the features of this panel correspond to those of the preamble of claim 1.
  • the main object of the present invention is to propose a sound absorbent panel, and a manufacturing method of said panel, having high soundproofing and echo reduction characteristic, the panel being easy and quick to be built.
  • Another object is to propose a flexible sound absorbent panel, which can be adjust to surfaces and/or walls curved or with complex geometries, which has a pleasant superficial aspect and is aesthetically agreeable, and which does not require covers or further decorative treatments.
  • numeral 1 indicates a sound absorbent panel of the present invention, including two facing plates 2, each of which provided with a plurality of parallel grooves first 5 and seconds 6, respectively carried out in the opposed faces first 3 and second 4 of each plate 2. Particularly, the two plates are mutually fixed, by sticking the respective seconds faces 4.
  • the grooves first 5 and second 6 of each plate 2 are partially intersecting, and they carry out through openings 8 in said plate 2 at each intersection.
  • the first grooves 5 have a depth equal to the thickness of the corresponding plate 2, while the second grooves 6 have a depth ranging between around a fifth and around four fifths of the thickness of corresponding plate 2.
  • the first 5 and second 6 grooves are almost orthogonal each to other and they have a cross section with rectangular or "V" or "U” or polygonal shape.
  • first grooves 5 of a plate 2 are off-set with respect to the first grooves 5 of the remaining plate 2.
  • the grooves 5, 6 of a plate 2 can form with the corresponding grooves 5, 6 of the other plate 2 an angle ranging approximately between 0° and 90°.
  • the two plates 2 are made of wood or its by-products and it is provided that at least the first face 3 of each plate 2 is covered with a sheet of faced material, or is lacquered or painted.
  • the figures 3 , 4 and 5 show a variant of the sound absorbent panel 1 including a layer 7 of flexible material, interposed between the two plates 2 and fixed thereto through bonding agent.
  • the flexible material is constituted by fabric or nonwoven fabric or a plate made of rubbery or spongy material, or a lead sheet or an high density sheet.
  • the first grooves 5 of a plate 2 fit together with the first grooves 5 of the remaining plate 2, in such a way to confer to panel 1 flexibility and therefore the capacity to be bent and adapted for an application on curved or shaped surfaces.
  • the first grooves 5 have preferably a "V" cross-section.
  • the figure 6 shows a further variant of the sound absorbent panel constituted by three superimposed plates 2 having off-set grooves 5, 6.
  • the manufacturing method of this sound absorbent panel 1 provides:
  • the method further provides to carry out first grooves 5 of each plate 2 having a depth equal to the thickness of said plate 2 and positioned almost orthogonal with respect to the second grooves 6.
  • the manufacturing method further provides to joint together the two plates 2 by means of a layer of flexible material 7 and to fix said layer of flexible material 7 to the two plates 2 by sticking.
  • the first grooves 5 of a plate 2 are carried out facing the first grooves 5 of the other plate 2 in order to give flexibility to the panel 1.
  • the main advantage of the present invention is to provide a sound absorbent panel and a related manufacturing method having high sound absorbing characteristics and echo reduction, and easy and quick to be built.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

A sound absorbent panel includes at least two facing plates (2), each of which provided with a plurality of parallel grooves first (5) and second (6), carried out on opposite faces respectively first (3) and second (4) of each plate (2). <IMAGE>

Description

  • The present invention relates to a sound absorbent panel for covering walls, ceilings and floors of rooms and premises and to a manufacturing method of said panel.
  • There are known soundproofing elements consisting of sheets of metallic material or asbestos cement or rock or glass wool, used for covering the walls of rooms to be soundproofed, by virtue of the reduced penetration of the sound waves through the material of which said elements are carried out.
  • The main drawback of said known elements consists in their weight and encumbrance, due to the high thickness required to achieve a suitable insulation and in the need to cover said elements to confer them an acceptable aesthetical aspect.
  • There are also know soundproofing panels made of composite material or wood, a face of which has a plurality of protrusions and/or a network of cavities or holes that, increasing the panel surface, cause deadening and absorption of sound waves.
  • The main drawback of said known panels consists in that they provide an inadequate sound proofing and insufficient reduction of the echo.
  • The drawback of the known panel manufacturing methods consists in that the known elements are very expensive, because of the manufacturing complexity for carrying out protrusion and/or cavities.
  • Other drawback of the above-mentioned known elements and panels consists in their stiffness and, thus, in the difficulty and/or impossibility to apply them to curved surface/walls having a complex geometries.
  • Document US3087576 discloses a sound absorbent panel including two facing plates. Each plate is provided with first and second a parallel grooves carried out on opposite faces of said plate.
  • Document DE622470 discloses a sound absorbent panel comprising two or more row of spaced apart strips.
  • Document EP0745738 discloses an acoustic panel made from a triple-layered solid wooden board with two cover layers parallel to each other in relation to the fibre direction and one centre layer running across it.
    The cover layer on the room side has longitudinally aligned slits reaching to the centre layer. The centre layer has on its side facing this slit layer grooves crossing the slits. The grooves and slits criss-cross at right angles. The slits and/or grooves can have a rectangular, rounded, triangular or chamfered cross- section. The other cover layer can also have slits aligned with those of the room-facing layer.
  • Document AT 6097 U1 and document JP-A-02178447 , disclose a panel a face of which has grooves parallel each other and with depth smaller than the thickness of the plate and bigger than half of said thickness. The other face has identica! grooves orthogonal to the grooves of the first mentioned face. The crosses of grooves form passing holes.
  • Document JP-A-02178447 further discloses (see Figure 8) a sound absorbing decorative panel made of two plate body each with respective grooves formed at preset interval and with the depth of the grooves on one face of each plate body reaching nearly one half of the thickness of the plate body. The plate body are stuck while the respective grooves are matched with each other forming hollow stripe holes.
  • The grooves on the opposite face of one of the plate bodies have a depth equal to the thickness of this plate body. The features of this panel correspond to those of the preamble of claim 1.
  • The main object of the present invention is to propose a sound absorbent panel, and a manufacturing method of said panel, having high soundproofing and echo reduction characteristic, the panel being easy and quick to be built.
  • Other object is to propose a flexible sound absorbent panel, which can be adjust to surfaces and/or walls curved or with complex geometries, which has a pleasant superficial aspect and is aesthetically agreeable, and which does not require covers or further decorative treatments.
  • The above-mentioned objects are achieved according to the claims' content.
  • The characteristics of the present invention are underlined in the following with particular reference to the attached drawings, in which:
    • figure 1 show an axonometric partial view of the sound absorbent panel object of the present invention;
    • figure 2 shows a front view of figure 1 panel;
    • figure 3 shows a axonometric partial schematic view of a variant of figure 1 panel;
    • figure 4 shows a front view of figure 3 panel;
    • figure 5 shows a side view of figure 3 panel;
    • figure 6 shows a front view of a further variant of figure 1 panel.
  • With reference to the figures 1 and 2, numeral 1 indicates a sound absorbent panel of the present invention, including two facing plates 2, each of which provided with a plurality of parallel grooves first 5 and seconds 6, respectively carried out in the opposed faces first 3 and second 4 of each plate 2. Particularly, the two plates are mutually fixed, by sticking the respective seconds faces 4.
  • The grooves first 5 and second 6 of each plate 2 are partially intersecting, and they carry out through openings 8 in said plate 2 at each intersection. The first grooves 5 have a depth equal to the thickness of the corresponding plate 2, while the second grooves 6 have a depth ranging between around a fifth and around four fifths of the thickness of corresponding plate 2. The first 5 and second 6 grooves are almost orthogonal each to other and they have a cross section with rectangular or "V" or "U" or polygonal shape.
  • In the preferred embodiment the first grooves 5 of a plate 2 are off-set with respect to the first grooves 5 of the remaining plate 2. The grooves 5, 6 of a plate 2 can form with the corresponding grooves 5, 6 of the other plate 2 an angle ranging approximately between 0° and 90°. The two plates 2 are made of wood or its by-products and it is provided that at least the first face 3 of each plate 2 is covered with a sheet of faced material, or is lacquered or painted.
  • The figures 3, 4 and 5 show a variant of the sound absorbent panel 1 including a layer 7 of flexible material, interposed between the two plates 2 and fixed thereto through bonding agent.
  • The flexible material is constituted by fabric or nonwoven fabric or a plate made of rubbery or spongy material, or a lead sheet or an high density sheet.
  • It is provided that in this variant of panel 1, the first grooves 5 of a plate 2 fit together with the first grooves 5 of the remaining plate 2, in such a way to confer to panel 1 flexibility and therefore the capacity to be bent and adapted for an application on curved or shaped surfaces. In such variant the first grooves 5 have preferably a "V" cross-section.
  • The figure 6 shows a further variant of the sound absorbent panel constituted by three superimposed plates 2 having off- set grooves 5, 6.
  • The manufacturing method of this sound absorbent panel 1 provides:
    • to carry out a plurality of second grooves 6 on a second face 4 of two plates 2;
    • to superimpose and to join together by sticking the second faces 4 of the two plates;
    • to carry out a plurality of first grooves 5 on a first face 3 of each plate 2.
  • The method further provides to carry out first grooves 5 of each plate 2 having a depth equal to the thickness of said plate 2 and positioned almost orthogonal with respect to the second grooves 6.
  • It is important to underline that the manufacturing method allows carrying out the grooves 5, 6 of each plate 2 in such a way to form an angle included between 0° and 90° with the corresponding grooves 5, 6 of the other plate 2.
  • The manufacturing method further provides to joint together the two plates 2 by means of a layer of flexible material 7 and to fix said layer of flexible material 7 to the two plates 2 by sticking. The first grooves 5 of a plate 2 are carried out facing the first grooves 5 of the other plate 2 in order to give flexibility to the panel 1.
  • The main advantage of the present invention is to provide a sound absorbent panel and a related manufacturing method having high sound absorbing characteristics and echo reduction, and easy and quick to be built.
  • Other advantage is to provide a flexible sound absorbent panel, which can be adjust to surfaces and/or walls curved or with complex geometries, which has a pleasant superficial aspect and is aesthetically agreeable, and which does not require covers or further decorative treatments

Claims (17)

  1. Sound absorbent panel including two facing plates (2), each of which is provided with a plurality of parallel first (5) and second (6) grooves, carried out on opposite respective first (3) and second (4) faces of each plate (2); the first (5) and second (6) grooves of each plate (2) being partially intersected, carrying out, at each intersection, a corresponding through opening (8) on said plate (2), characterized in that the first grooves (5) of both facing plates (2) have depth equal to the thickness of the corresponding plate (2).
  2. Panel according to claim 1 characterized in that the second faces (4) of the two plates (2) are mutually fixed.
  3. Panel according to claim 1 characterized in that includes at least a layer (7) of flexible material interposed between the plates (2).
  4. Panel according to claim 1 characterized in that the grooves first (5) and second (6) of each plate (2) are almost orthogonal each to the other.
  5. Panel according to claim 1 characterized in that each groove (5, 6) has a cross section with rectangular or "V" or "U" or polygonal shape.
  6. Panel according to claim 1 characterized in that the second grooves (6) have depth ranging between a fifth and four fifths of the thickness of the corresponding plate (2).
  7. Panel according to claim 1 characterized in that the first grooves (5) of a plate (2) are off-set with respect to the first grooves (5) of the other plate (2).
  8. Panel according to claim 3 characterized in that the first grooves (5) of a plate (2) are facing the first grooves (5) of the other plate (2).
  9. Panel according to claim 1 characterized in that the grooves (5, 6) of a plate (2) form with the corresponding grooves (5, 6) of the other plate (2) an angle ranging between around 0° and around 90°.
  10. Panel according to claim 3 characterized in that the layer (7) of flexible material is made of fabric, nonwoven fabric, plate of rubbery or spongy material, lead or similar.
  11. Panel according to claim 1 or claim 3 characterized in that the at least two plates (2) are fixed at least by bonding agent.
  12. Panel according to claim 1 characterized in that each plate (2) is made of wood or its byproducts.
  13. Panel according to claim 1 characterized in that at least an external face (3) of a plate (2) is covered with a sheet of faced material, or is lacquered or painted.
  14. Method of manufacturing a sound absorbent panel (1) described in claim 1, said method provides that:
    - a plurality of seconds grooves (6) are carry out on a second face (4) of two plates (2);
    - the two plates are superimposed and to joined together by sticking together the second faces (4) of the two plates;
    - a plurality of first grooves 5 are carried out on a first face 3 of each plate 2;
    - first grooves (5) are carried out on each plate (2), said first grooves (5) having depth equal to the thickness of said plate (2);
    - whereby the method provides that:
    - the grooves first (5) and second (6) of each plate (2) are carried out almost orthogonal each to other.
  15. Manufacturing method according to claim 14 characterized in that provides:
    - to joint together the two plates (2) by means of at least a layer of flexible material (7);
    - to fix said layer of flexible material (7) to the two plates (2) by sticking.
  16. Manufacturing method according to claim 14 characterized in that provides to carry out the grooves (5, 6) of plate (2) to form an angle ranging between 0° and 90° with the corresponding grooves (5, 6) of the other plate (2).
  17. Manufacturing method according to claim 15 characterized in that provides to carry out the first grooves (5) of a plate (2) facing the grooves (5) of the other plate (2).
EP03009072A 2002-04-22 2003-04-18 Sound absorbent panel and related manufacturing method Expired - Lifetime EP1357237B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200331436T SI1357237T1 (en) 2002-04-22 2003-04-18 Sound absorbent panel and related manufacturing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2002BO000216A ITBO20020216A1 (en) 2002-04-22 2002-04-22 SOUND ABSORBING PANEL AND RELATED METHOD OF REALIZATION
ITBO20020216 2002-04-22

Publications (3)

Publication Number Publication Date
EP1357237A2 EP1357237A2 (en) 2003-10-29
EP1357237A3 EP1357237A3 (en) 2004-01-28
EP1357237B1 true EP1357237B1 (en) 2008-10-08

Family

ID=11440062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03009072A Expired - Lifetime EP1357237B1 (en) 2002-04-22 2003-04-18 Sound absorbent panel and related manufacturing method

Country Status (6)

Country Link
EP (1) EP1357237B1 (en)
AT (1) ATE410563T1 (en)
DE (1) DE60323897D1 (en)
ES (1) ES2312684T3 (en)
IT (1) ITBO20020216A1 (en)
SI (1) SI1357237T1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2304085B1 (en) * 2006-05-04 2009-05-01 Grupo Sansano Valero, S.L. PROCEDURE FOR OBTAINING WOOD COATING IN ACOUSTIC PANELS, AND PANEL OBTAINED WITH SUCH COATING.
DE102007044875A1 (en) 2007-09-20 2009-04-02 VS Vereinigte Spezialmöbelfabriken GmbH & Co. KG Plate-shaped component
ES2391336B1 (en) * 2010-11-05 2013-10-02 Alims 2000 S.L. ACOUSTIC PANEL AND ACOUSTIC CLOSURE.
AT515748B1 (en) * 2014-04-24 2017-09-15 Stia - Holzindustrie Ges M B H Building board, in particular wall or ceiling panel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02178447A (en) * 1988-12-28 1990-07-11 Daiken Trade & Ind Co Ltd Sound absorbing decorative panel and manufacture thereof
AT6097U1 (en) * 2001-10-25 2003-04-25 Wiesner Hager Baugruppe Holdin SOUND ABSORPTION ELEMENT PREFERRED FROM WOOD AND / OR WOOD MATERIAL

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE622470C (en) * 1933-04-01 1935-11-29 Erich Wintergerst Dr Ing Airborne sound-absorbing wall covering panel for the production of reverberation-absorbing wall coverings
US3087576A (en) * 1958-06-20 1963-04-30 Pittsburgh Corning Corp Sound absorbers
EP0528061A1 (en) * 1991-08-14 1993-02-24 Claus Hipp Acoustically insulating panel
AT405069B (en) * 1995-06-02 1999-05-25 Wiesner Hager Baugruppe Gmbh ACOUSTIC PANEL AND METHOD FOR PRODUCING THE SAME
DE29616050U1 (en) * 1996-09-14 1996-10-24 Schmelzle Brigitte Cover plate for ceiling and wall coverings
DE19824446B4 (en) * 1998-05-30 2006-03-02 Calenberg Ingenieure Planmässig Elastisch Lagern Gmbh elastomeric bearings

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02178447A (en) * 1988-12-28 1990-07-11 Daiken Trade & Ind Co Ltd Sound absorbing decorative panel and manufacture thereof
AT6097U1 (en) * 2001-10-25 2003-04-25 Wiesner Hager Baugruppe Holdin SOUND ABSORPTION ELEMENT PREFERRED FROM WOOD AND / OR WOOD MATERIAL

Also Published As

Publication number Publication date
EP1357237A3 (en) 2004-01-28
EP1357237A2 (en) 2003-10-29
ITBO20020216A0 (en) 2002-04-22
ITBO20020216A1 (en) 2003-10-22
ATE410563T1 (en) 2008-10-15
SI1357237T1 (en) 2009-02-28
ES2312684T3 (en) 2009-03-01
DE60323897D1 (en) 2008-11-20

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