Sound absorbent panel and related manufacturing method

(19)

(11)

EP 1 357 237 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	28.01.2004 Bulletin 2004/05

(43)	Date of publication A2:
	29.10.2003 Bulletin 2003/44

(21)	Application number: 03009072.4

(22)	Date of filing: 18.04.2003

(51)	International Patent Classification (IPC)⁷: E04B 1/86

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
	Designated Extension States:
	AL LT LV MK

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Priority:

22.04.2002 IT BO20020216

(71)	Applicant: PREAM S.R.L.
	61030 Montefelcino (Pesaro-Urbino) (IT)

(72)	Inventor:
	Morelli, Giuseppe, c/o PREAM S.R.L. 61030 Montefelcino (Pesaro-Urbino) (IT)

(74)	Representative: Negrini, Elena
	Agazzani & Associati S.r.l. Via dell'Angelo Custode 11/6 40141 Bologna 40141 Bologna (IT)

(54)	Sound absorbent panel and related manufacturing method

(57) 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).

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