Global Patent Index - EP 4030420 A1

EP 4030420 A1 20220720 - ACOUSTIC METAMATERIAL AND PROCESS FOR MANUFACTURING THE SAME

Title (en)

ACOUSTIC METAMATERIAL AND PROCESS FOR MANUFACTURING THE SAME

Title (de)

AKUSTISCHES METAMATERIAL UND VERFAHREN ZU SEINER HERSTELLUNG

Title (fr)

MÉTAMATÉRIAU ACOUSTIQUE ET SON PROCÉDÉ DE FABRICATION

Publication

EP 4030420 A1 20220720 (EN)

Application

EP 21382026 A 20210115

Priority

EP 21382026 A 20210115

Abstract (en)

An acoustic metamaterial, which comprises at least one resonating layer (2a, 2b) made of a single material having a constant resonating thickness (t<sub>2</sub>) and a plurality of resonating unit cells (20); wherein each resonating unit cell (20) comprises a resonating opening (21) and a resonating element (22) extending into said resonating opening (21); wherein the resonating elements (22) are coplanar to the resonating layer (2a, 2b), having said resonating layer (2a, 2b) and said resonating elements (22) the same constant resonating thickness (t<sub>2</sub>). A process for manufacturing an acoustic metamaterial, comprising the steps of laminating a solid single material to obtain an unfinished resonating layer of a constant resonating thickness (t<sub>2</sub>); and die cutting the unfinished resonating layer to obtain a resonating layer (2a, 2b) having a plurality of resonating unit cells (20).

IPC 8 full level

G10K 11/172 (2006.01); G10K 11/168 (2006.01); G10K 1/06 (2006.01); G10K 11/00 (2006.01)

CPC (source: EP)

G10K 11/168 (2013.01); G10K 11/172 (2013.01); G10K 1/06 (2013.01); G10K 11/002 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 4030420 A1 20220720; EP 4030420 B1 20230607; EP 4030420 C0 20230607; ES 2952320 T3 20231030; WO 2022152449 A1 20220721

DOCDB simple family (application)

EP 21382026 A 20210115; EP 2021083456 W 20211130; ES 21382026 T 20210115