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Current content: 157 337 350 patent documents

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219 431 new documents added

1 247 852 documents amended

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EP 0292877 B1 19920122 - WALL COVERING ABSORBING ACOUSTIC WAVES IN A LIQUID MEDIUM

Title (en)

WALL COVERING ABSORBING ACOUSTIC WAVES IN A LIQUID MEDIUM

Publication

EP 0292877 B1 19920122 (FR)

Application

EP 88108044 A 19880519

Priority

FR 8707317 A 19870525

Abstract (en)

[origin: US4817757A] The covering is immersed in water (2). A viscoelastic substance (4) is disposed in ducts formed by rigid auxiliary walls (5) fixed to the base wall (1). The ends of these ducts (6) contain air. The invention is applicable, in particular, to providing protection against under-sea noise.

IPC 1-7

G10K 11/16

IPC 8 full level

G10K 11/172 (2006.01)

CPC (source: EP US)

G10K 11/172 (2013.01 - EP US); Y10T 428/24149 (2015.01 - EP US)

Designated contracting state (EPC)

DE ES FR GB IT NL SE

DOCDB simple family (publication)

EP 0292877 A1 19881130; EP 0292877 B1 19920122; CA 1288055 C 19910827; DE 3867908 D1 19920305; FR 2615994 A1 19881202; FR 2615994 B1 19890728; US 4817757 A 19890404

DOCDB simple family (application)

EP 88108044 A 19880519; CA 567358 A 19880524; DE 3867908 T 19880519; FR 8707317 A 19870525; US 19522788 A 19880518