EP 4030420 B1 20230607 - 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
Application
Priority
EP 21382026 A 20210115
Abstract (en)
[origin: EP4030420A1] 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)
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
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