EP1569540B1 - Hybride schaumstoff-spiralfedernmatratze - Google Patents

Hybride schaumstoff-spiralfedernmatratze Download PDF

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Publication number
EP1569540B1
EP1569540B1 EP02772641A EP02772641A EP1569540B1 EP 1569540 B1 EP1569540 B1 EP 1569540B1 EP 02772641 A EP02772641 A EP 02772641A EP 02772641 A EP02772641 A EP 02772641A EP 1569540 B1 EP1569540 B1 EP 1569540B1
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EP
European Patent Office
Prior art keywords
chamber
mattress
foam
core
airtight
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Expired - Lifetime
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EP02772641A
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English (en)
French (fr)
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EP1569540A1 (de
Inventor
Gualtiero Giori
Janine Giori
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Individual
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/20—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with springs moulded in, or situated in cavities or openings in foamed material
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A47C27/084—Fluid mattresses or cushions of pneumatic type self inflating
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/088—Fluid mattresses or cushions incorporating elastic bodies, e.g. foam
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/18—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays in combination with inflatable bodies

Definitions

  • This invention relates to an interactively modulable support apparatus, such as a mattress, having a layer of pressure adjustable self-inflating, open-cell, flexible polyurethane foam core and a layer of mattress spring coils. Both layers are independently adjustable as to softness/hardness, but also interactively modulable in the way that adjustment of the foam core layer modifies the characteristics of the coil spring layer.
  • This invention is a multiple layer combination mattress.
  • One or more layers are self-inflating elastomeric open-cell polyurethane foam and another layer is a section having mechanical coil springs therein.
  • Both layers are individually, as well as interactively adjustable as to their hardness and softness (indentation force deflection - IFD) and support (density).
  • IFD indentation force deflection - IFD
  • support density
  • Prior art mattressess exists having a coil spring core and one or more foam zones.
  • the foam layers typically have different density and IFD ratings to accommodate the weight of various parts of the body, such as the head, shoulders, middle body, and feet.
  • the coil spring core supports the layers of foam and is surrounded by a quilted fabric or ticking which is serves as outer decoration as well as holds the parts of the mattress together as one whole mattress.
  • US Patent No. 3,872,525 and No. 4,025,974 to Lea discloses a self-inflating air mattress/mat including an airtight flexible envelope which encloses a core of resilient, open cell, lightweight foam material, substantially the entire upper and lower portions of which are bonded to the envelope. The air within can be removed by compressing the structure whereby the foam layer collapses, allowing the mat to be rolled up into a compact package.
  • US Patent No. 4,944,060 illustrates a mattress having a plurality of discrete, air permeable cells which are to some extent hydrophobic.
  • the mattress uses pressurized air to inflate the mattress, and does not use any foam core.
  • US Patent No. 6,098, 378 discloses a method of packaging a single mattress to a small size to be conveniently carried.
  • the foam mattress is compressed to fit into a hard container for shipment.
  • the mattress is extracted and expands to its original shape.
  • the present invention modulates the density and the spring-back-force (IFD) of self-inflating, open-cell, flexible polyurethane foam in combination with traditional coil spring chambers, thus doing away with most problems of prior art devices.
  • IFD spring-back-force
  • the underlying coil spring layer is not subjected to concentrated pressure from the weights above it. Consequently, no hammock effect will be evidenced.
  • the invention results from the realization that a combination of a self-inflating, adjustable density, variable IFD, open-cell flexible polyurethane foam core with a mattress layer having coils therein greatly enhances the versatility of mattress combinations, offering great variety in adjustable levels of comfort.
  • the present invention uses, in the context of mattress manufacturing, the fact that the Indentation Force Deflection (IFD) and density properties of a certain quality range of flexible open-cell polyurethane foam can be modulated by removing some of the air from within the foam cells and altering the cellular structure of the foam core.
  • High density foam (such as visco-elastic foam) provides great comfort but is significantly more expensive.
  • the focal teaching of this invention is how to modulate a comparatively inexpensive, lower density foam to feel similar to a high density foam, and attain support and comfort characteristics of a higher density, more expensive foam, through layer interactivity between foam and traditional coil spring arrangements, without locking the user into one fixed comfort level, but give him a wide choice between very hard and very soft comfort.
  • IFD and density modulation are achieved by manipulating flexible polyurethane foam or material of similar characteristics.
  • This art teaches that this material is fashioned in a particular form and that it has to be of a composition as to permit the extraction of air in the alveolate structure in a uniform manner, thus increasing material density equally uniformly.
  • a further specialty of this material is that, by virtue of its structure, particular manufacturing and finishing processes, it affords in its low IFD number modulated state commensurably higher firmness stability, heretofore only associated with foam or similar material of a very much higher density number. Finally, it is much lighter in weight than the latter and can be reduced in size and volume for easy transport and storage.
  • This invention involves different reversible mattress combinations that one or more users may adjust differentially and individually to his or her liking, depending which side of the bed they choose to recline upon (left or right side of the bed, or the reverse surface).
  • the present invention can use a fan-style vacuum pump to draw air out of the foam core to double its density and to reduce its IFD value considerably. After only a few seconds of the pump's operation the foam feels like a high density, resilient foam with an IFD of under 20, supported by an equally modulated coil spring layer with adjusted softness. Since the vacuum pump comes equipped with variable speed and remote control memory settings this transformation occurs at the speed and in increments desired by the user.
  • This invention takes advantage of the adjustability of the self-inflating foam core as to comfort and also uses said adjustability to change the properties of the coil mattress above or below the foam mattress core.
  • the structure of this combination allows the mattress cores to be used in two horizontally juxtaposed orientations. Either the foam part of the mattress faces upwards or the coil part of the mattress faces upwards. This is decided by the user of the mattress.
  • air can be exhausted from the foam part of the mattress combination uniformly with the aid of a vacuum pump, which results in increasing the density of the foam core and decreasing the IFD within the core for a softer feeling foam core with more support. Since the coil core and the foam core are trapped within an airtight outer chamber the properties of said coil core will change as the foam core expands or contracts.
  • the coil core combination of the mattress combination may additionally be compressed by evacuating the air of the chamber containing the coils which would result in increasing the hardness of that part of the mattress but would also affect the adjacent foam core. This interactivity in adjustability contributes greatly to the versatility of such a mattress combination.
  • the basic configuration of this invention which comes in a broad variety of combinations between foam and spring coil cores and compartments, takes the form of a mattress with layer combinations comprising an airtight cover chamber enclosing at least one core of self-inflating polyurethane foam and at least one core of coil springs, said airtight cover chamber having at least one valve serving as a means to evacuate air.
  • Said core of coil springs may include a protective layer on both its upper and lower surfaces.
  • the mattress combination comprises two cores of self-inflating polyurethane foam placed as the upper and lower layers of the mattress, and one core of coil springs placed in between.
  • At least one core of self-inflating polyurethane foam of the mattress combination just described is enclosed in one additional airtight chamber, said additional airtight chamber being enclosed in said airtight cover chamber and comprising at least one valve penetrating through the wall of said airtight cover chamber to evacuate air from said additional airtight chamber.
  • the number of cores of self-inflating polyurethane foam enclosed in additional airtight chambers is two.
  • the coil spring core is enclosed in a further additional airtight chamber having a same valve arrangement as the other additional airtight chambers, all additional airtight chambers being enclosed in the airtight cover chamber.
  • the core of self-inflating polyurethane foam is vertically subdivided into at least two longitudinal or transversal sections, and the additional airtight chamber for said core is replaced by individual additional airtight chambers for each of said sections, each chamber having a same valve arrangement as full size additional airtight chambers.
  • the valve or valves fitted to each additional airtight chamber and to the airtight cover chamber may comprise one or more air permeable distancing elements, keeping any adjacent materials from obstructing airflow through the valve or valves.
  • Fig. 1 shows one airtight chamber with two cores inside.
  • Chamber (A) is the main airtight cover chamber constituting the overall mattress.
  • the lower section (B) is a self-inflating foam core (SF1), above which is placed a coil spring core (C) with a number of coil springs (11), normally placed in individual fabric sleeves (not shown).
  • SF1 self-inflating foam core
  • C coil spring core
  • protective layers (14) are provided to prevent the ends of the coil springs from protruding into a person lying on top of the chamber (A) and into the foam core (B) below.
  • An air permeable distancing element (13) prevents adjacent materials from obstructing the valves.
  • the foam core (SF1) When air is exhausted through the valve, the foam core (SF1) will be compressed uniformly and the coil springs in the coil spring section will also be compressed. As a result, both density and IFD values of the two sections will change.
  • the surface of the coil spring section will harden while, inversely, the surface of the foam core section will soften.
  • This mattress may be used either with the foam or the coil spring section facing upwards.
  • Fig. 2 shows a combination mattress with one airtight cover chamber (A), in which are placed two self-inflating foam cores (SF1 and SF2) in the bottom (24) and the top (25) positions, while a coil spring core (21), having protective layers (26), sandwiched in between.
  • a valve (22) and air permeable distancing element (23) has been provided through which air can be exhausted.
  • the two foam cores (24 and 25) and the coil spring core springs (21) are compressed. Under compression, the surfaces of the foam cores will soften as a result of decreasing IFD, while the coil spring core, in contrast, will increase in hardness because the coil springs are tensioned and want to return to their initial relaxed state.
  • Fig. 3 shows a mattress combination with two chambers: an airtight cover chamber (A) with wall (30), and an additional airtight chamber (B) inside.
  • (B) is completely self-contained and envelopes a self-inflating foam core (SF1).
  • the upper part of chamber (A) contains a coil spring core (37) with a number of coil springs (38).
  • Protective layers (33) are placed each above and below the coil springs.
  • Two valves (31 and 34) are provided, whereby upper valve (31) serves to exhaust air from the overall chamber (A), resulting in the compression of the upper coil spring core which will harden.
  • Lower valve (34) serves to exhaust air from chamber (B) exclusively and independently from chamber (A), if so selected.
  • Valve (34) leads to the interior of chamber (B) by penetrating both wall (30) of the overall chamber and wall (36) of chamber (B). Both valves have air permeable distancing elements (32 and 35) attached to their interior end to prevent valve-clogging by foam or cover material.
  • This mattress combination can be used on both sides. If so desired, the coil spring core can be used to lay on because of a desire of reclining on a harder surface, or the foam core side can be used because of a softer surface.
  • both chambers When air is evacuated from the foam core (SF1) in chamber (B), both chambers will be rendered softer because of the falling IFD value in chamber (B), but also because the coil spring core (37) will relax further due to the shrinking volume in chamber (B).
  • Fig. 4 shows a mattress combination with three chambers.
  • the first (A) is an airtight cover chamber (40). Inside (A) are two additional airtight chambers (B and C), each having a self-inflating polyurethane core (SF1 and SF2). Sandwiched between these is a traditional coil spring core (41) protected by foam layers (42) at both ends of the springs.
  • (A) has a valve (43) and air permeable distancing element (44) for the purpose of evacuating air from that chamber, which will result in compressing the coil spring core, increasing its firmness.
  • Chambers (B and C) also have independent valves (45 and 46), which pass through both chamber walls into the interior of their respective foam core chamber, and each valve has an air permeable distancing element (47 and 48) attached. Through these air can be evacuated either from both chambers (B and C) simultaneously or independently, producing a large variety of different hardness or softness combinations.
  • the sandwiched coil spring layer will be interactively modulated, since compression of either or both chambers (B) and (C) will result in a further extension of the springs.
  • Fig. 5 shows a three chamber (A, B and C) combination mattress.
  • A is the overall chamber enveloping the other two (B and C) and has sealed wall (50).
  • the lower chamber (B) is filled with a self-inflating polyurethane foam core (SF1), enveloped in its own hermetically sealed cover (59).
  • SF1 self-inflating polyurethane foam core
  • Inside the upper chamber (C) is a traditional coil spring core (51) and it also is hermetically sealed by its own cover (58).
  • the coil spring core (51) has a protective foam layer (53) placed each above and below the springs.
  • the overall chamber (A) has a valve (56) placed therein and through its own wall (50), fitted with an air permeable distancing element (57) on the interior, which prevents the cover (58) of chamber (C) from being drawn into the valve when the air is being evacuated from this chamber.
  • Chamber (C) also has its own valve with air permeable distancing element (52) which passes through both walls (50) of chamber (A) and (58) of (C).
  • Chamber (B) also has its own valve (54) passing through wall (50) of chamber (A) and wall (59) of chamber (B).
  • Valve (54) is equally fitted with an air permeable distancing element to prevent the foam and covering from being drawn into the valve when air is evacuated from the foam core (SF1), and it serves, in the opposite case, to distance the foam and cover from the valve when the foam core is allowed to self-inflate.
  • the versatility of this mattress combination resides in the fact that all three valves can be operated selectively to increase or decrease the respective softness and hardness of the various cores or to decompress the whole mattress for storage or transport.
  • the coil springs (51) When the air is evacuated from chamber (C), the coil springs (51) will be compressed, offering a higher degree of firmness.
  • the self-inflating foam core (SF1) When the air is being evacuated from chamber (B), the self-inflating foam core (SF1) will soften but also allow chamber (C) to expand, offering a different level of softness/firmness combinations interactively.
  • both chambers (B) and (C) will be compressed by the outer cover (50) and expel air, provided the respective chamber valves are open, resulting in the coil springs being harder to compress while the foam core will soften.
  • the mattress can be used on either side if so desired.
  • Fig. 6 shows a mattress combination with 5 chambers which are hermetically sealed from each other.
  • Overall chamber (A) with side wall (60) encloses four other chambers (B, C1, C2 and C3).
  • Chamber (B) envelopes a traditional coil spring core (61) within its own sealed wall..Below it are placed three smaller self-inflating foam (SF) sections (C1, C2 and C3), each enclosed in their own outer wall envelopes. Arrow (65) indicates how the various cores and sections are associated with each other.
  • the overall cover of chamber (A) has its own valve (62), combined with an air permeable distancing element (62a).
  • Chamber (B) has its own valve (63) which passes through wall (60) of the outer chamber and through its own wall.
  • the three smaller sections (C1, C2 and C3) below are filled with self-inflating foam and have their own valves (64a, 64b and 64c) and air permeable distancing elements (one is shown at 64d).
  • Each valve of (C1, C2 and C3) pass though wall (60) of chamber (A) and through their own wall so that air can be evacuated from each chamber in a selective manner.
  • the selectively modulable foam core chambers control various areas of hardness and softness of the coil spring layer, corresponding to upper, middle and lower body, thus greatly enhancing the versatility of the mattress.
  • Fig. 7 shows a mattress combination in a cut-away view, consisting of four chambers.
  • An outer chamber with wall ( 70 ) fully encloses and hermetically seals three inner chambers (A, B, and C).
  • (B) is the lower chamber with its own wall (72), enclosing a self-inflating foam core (SF1).
  • the fourth chamber (A) with its own wall (79) envelops a traditional coil spring core, and it is sandwiched between chambers (B) and (C).
  • the coil spring core has protective layers (74) placed one above and one below the spring ends.
  • Valve (75) in cover ( 70 ) is fitted with an air permeable distancing element (75a) to avoid being blocked by wall (79) of chamber (A) when air is evacuated. (75) is by purpose placed in a position that, when air is evacuated from its chamber, the other three chambers are compressed, provided their respective valves are open.
  • the lower chamber (B) with wall (72) has valve (78) with anti-blockage distancing element (78a) passing into its interior through the outer wall ( 70 ) of the overall cover and its own (72).
  • the upper chamber (C) with sealed cover ( 71 ) completely envelopes the self-inflating foam core (SF2). It has valve (76) with anti-clogging, air permeable, distancing element (76a), leading from its interior through its own wall ( 71 ) and through outer wall ( 70 ), so that only air from this chamber can be evacuated.
  • Chamber (A) which contains a traditional coil spring core (73), is sandwiched between (B) and (C). It has its own wall (79), completely enclosing the coil spring layer, so that air can only be withdrawn from it through valve (77). In order to so, this valve passes through its own wall (79) and outer wall (70). All four valves can selectively be activated to modulate the air volume in any one of the four chambers, providing new levels of versatility and comfort. This mattress may also be compressed for transport or storage.
  • Fig. 8 shows one configuration of the present invention with weights (W) simulating body parts sinking into the outer cover (81) and into the foam core (82) surface (FS1).
  • the coil spring core (83) is supporting the foam, but if some air is withdrawn through valve (84) and through distancing element (85), the foam surface will become softer and contour the weights more so. In contrast, the coil section will also compress and become firmer giving the mattress extra support.
  • Fig. 9 shows the same configuration as in Fig. 8 but with one weight removed (W1), the valve (94) is closed, and the foam core (92) and surface (FS1) exhibit the imprint of the users body, as the foam core (92) recovers slowly upwards.
  • the coil core (93) when air is removed from outer chamber (91) through valve (94) and distancing element (95) will be compressed and offer more upward support. It is also possible to evacuate additional air from this mattress structure, and observe the imprint of the user's body remain on surface (SF1), hence exhibiting no upward recovery.
  • Fig. 10 shows a foam coil combination mattress in its compressed and deflated state with one or more valves (101) (102) fitted onto the chamber wall ( 100 ) and one or more air permeable distancing elements (103 shown only) to prevent clogging.
  • Valve (102) is larger than valve (101) and may be used for rapid inflation whereas valve (101) may be used to modulate the mattress combination as well as to inflate it.
  • Fig, 11 shows the same foam coil combination mattress in its inflated state with one or more inflation valves (1101 & 1102) and one or more air permeable distancing elements (1103 shown only) to prevent clogging.

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  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Materials For Medical Uses (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Magnetic Treatment Devices (AREA)
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Claims (8)

  1. Eine Matratze mit Schichtkombinationen bestehend aus einer luftdichten Aussenkammer, welche mindestens einen selbstaufblasenden Polyurethan-Schaumkern und mindestens einen Spiralfederkern umhüllt; die obgenannte luftdichte Aussenkammer hat dabei mindestens ein Ventil für das Luftablassen.
  2. Die Matratzenkombination der Forderung 1, wobei der obgenannte Spiralfederkern auf der oberen und unteren Oberfläche eine Schutzschicht enthält.
  3. Die Matratzenkombination der Forderungen 1 oder 2, bestehend aus zwei selbstaufblasenden Polyurethan-Schaumkernen als obere und untere Schicht der Matratze, und einem sich dazwischen befindeten Spiralfederkern.
  4. Die Matratzenkombination einer der Forderungen 1 bis 3, wobei mindestens ein selbstaufblasender Polyurethan-Schaumkern in einer zusätzlichen luftdichten Kammer eingeschlossen ist, und diese zusätzliche luftdichte Kammer in der obgenannten luftdichten Aussenkammer eingeschlossen ist und ein Ventil enthält, welches für das Ablassen der Luft aus der obgenannten zusätzlichen luftdichten Kammer die Wand der obgenannten luftdichten Aussenkammer durchdringt.
  5. Die Matratzenkombination der Forderung 4, wobei die Anzahl der in den zusätzlichen luftdichten Kammern eingeschlossenen selbstaufblasenden Polyurethan-Schaumkerne zwei beträgt.
  6. Die Matratzenkombination einer der Forderungen 3 bis 5, wobei der obgenannte Spiralfederkern in eine weitere zusätzliche luftdichte Kammer eingeschlossen ist, welche dieselbe Ventileinrichtung wie die andere(n) zusätzliche(n) luftdichte(n) Kammer(n) enthält, und alle zusätzliche luftdichte Kammern in die luftdichte Aussenkammer eingeschlossen sind.
  7. Die Matratzenkombination einer der Forderungen 3 bis 6, wobei mindestens ein selbstaufblasender Polyurethan-Schaumkern vertikal in mindestens zwei längenmässige oder transversale Sektionen geteilt ist, und die zusätzliche luftdichte Kammer des obgenannten Kerns durch individuelle zusätzliche luftdichte Kammern für jede der obgenannten Sektionen ersetzt wird, und jede Kammer dieselbe Ventileinrichtung wie die zusätzlichen luftdichten Kammern der ursprünglichen Grösse hat.
  8. Die Matratzenkombination einer der Forderungen 1 bis 7, wobei das Ventil oder die Ventile jeder zusätzlichen luftdichten Kammer oder luftdichten Aussenkammer ein oder mehrere luftdurchlässige(s) Distanzelement(e) enthält, welche(s) verhindert/n, dass angrenzende Materialien den Luftfluss durch das/ die obgenannte(n) Ventil(e) behindern.
EP02772641A 2002-09-23 2002-09-23 Hybride schaumstoff-spiralfedernmatratze Expired - Lifetime EP1569540B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2002/003936 WO2004034852A1 (en) 2002-09-23 2002-09-23 Foam and coil mattress combination

Publications (2)

Publication Number Publication Date
EP1569540A1 EP1569540A1 (de) 2005-09-07
EP1569540B1 true EP1569540B1 (de) 2008-05-07

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EP (1) EP1569540B1 (de)
JP (1) JP2005537902A (de)
CN (1) CN1668229A (de)
AT (1) ATE394048T1 (de)
AU (1) AU2002337399A1 (de)
DE (1) DE60226519D1 (de)
WO (1) WO2004034852A1 (de)

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US6098378A (en) 1998-10-02 2000-08-08 Wyatt; Curtis Method of packaging a single mattress to a small size to be conveniently carried
US6038722A (en) * 1999-01-08 2000-03-21 Giori; Gualtiero G. Pressure adjustable, anatomically contoured mattress
US6574814B2 (en) * 2000-03-14 2003-06-10 L&P Property Management Company Bedding or seating product having filled tube topper

Also Published As

Publication number Publication date
CN1668229A (zh) 2005-09-14
EP1569540A1 (de) 2005-09-07
JP2005537902A (ja) 2005-12-15
DE60226519D1 (de) 2008-06-19
AU2002337399A1 (en) 2004-05-04
ATE394048T1 (de) 2008-05-15
WO2004034852A1 (en) 2004-04-29

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