-
Diffractor for diffracting sound
-
Patent number 9,909,269
-
Issue date Mar 6, 2018
-
4SILENCE B.V.
-
Ysbrand Hans Wijnant
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
-
Road with sound diffractors
-
Patent number 8,696,233
-
Issue date Apr 15, 2014
-
4Silence B.V.
-
Ysbrand Hans Wijnant
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
-
-
Noise reducing equipment
-
Patent number 7,380,636
-
Issue date Jun 3, 2008
-
Hiroshi Yano
-
G10 - MUSICAL INSTRUMENTS ACOUSTICS
-
Enfolding sound barrier
-
Patent number 6,810,991
-
Issue date Nov 2, 2004
-
Masao Suzuki
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
-
Sound absorbing structure
-
Patent number 6,568,135
-
Issue date May 27, 2003
-
Nichias Corporation
-
Yoshiaki Yokoyama
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
-
-
Muffling wall
-
Patent number 6,173,806
-
Issue date Jan 16, 2001
-
Itoon
-
Sadakuni Ito
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
-
Sound-absorbing structure
-
Patent number 4,244,439
-
Issue date Jan 13, 1981
-
Elektronikcentralen
-
Jens Wested
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
-
3602331
-
Patent number 3,602,331
-
Issue date Aug 31, 1971
-
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES