EP 3683373 A1 20200722 - UTILIZATION OF POROUS BUILDING MATERIALS IN SOUND ABSORPTION
Title (en)
UTILIZATION OF POROUS BUILDING MATERIALS IN SOUND ABSORPTION
Title (de)
VERWENDUNG VON PORÖSEN BAUSTOFFEN ZUR SCHALLABSORPTION
Title (fr)
UTILISATION DE MATÉRIAUX DE CONSTRUCTION POREUX POUR L'ABSORPTION ACOUSTIQUE
Publication
Application
Priority
EP 19152584 A 20190118
Abstract (en)
According to an example aspect of the present invention, there is provided an acoustic structure comprising a natural fibrous acoustic coating on a surface of a porous background structure.
IPC 8 full level
B32B 3/26 (2006.01); E04B 1/86 (2006.01); E04B 1/84 (2006.01)
CPC (source: EP)
E04B 1/86 (2013.01); E04B 2001/8461 (2013.01); E04B 2001/8476 (2013.01)
Citation (applicant)
- FI 95041 C 19951211 - TAMPIO ANNA LIISA [FI]
- WO 2007063178 A1 20070607 - HIRVI ANTTI [FI], et al
- US 3044919 A 19620717 - STONEBURNER CHALMER S
- GB 358995 A 19311012 - JOHNS MANVILLE
- US 3044919 A 19620717 - STONEBURNER CHALMER S
Citation (search report)
- [XI] RU 2369495 C2 20091010 - NPP TEHKNIKAL KONSALTING AOZT [RU]
- [XI] RU 2490150 C1 20130820 - FEDERAL NOE G BJUDZHETNOE OBRAZOVATEL NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL NOGO OBRAZOVANIJA TOL J [RU]
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 3683373 A1 20200722; EP 3683373 B1 20220713; ES 2928433 T3 20221117
DOCDB simple family (application)
EP 19152584 A 20190118; ES 19152584 T 20190118