constructions for generation of phase shifting

Patents Grantslast 30 patents

  • Information Patent Grant

    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
  • Information Patent Grant

    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
  • Information Patent Grant

    Active sound reduction apparatus and active noise insulation wall h...

    • Patent number 7,613,307
    • Issue date Nov 3, 2009
    • Mitsubishi Heavy Industries, Ltd.
    • Keizo Ohnishi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Noise reducing equipment

    • Patent number 7,380,636
    • Issue date Jun 3, 2008
    • Hiroshi Yano
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Enfolding sound barrier

    • Patent number 6,810,991
    • Issue date Nov 2, 2004
    • Masao Suzuki
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Sound absorbing structure

    • Patent number 6,568,135
    • Issue date May 27, 2003
    • Nichias Corporation
    • Yoshiaki Yokoyama
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Active device for attenuating the intensity of sound

    • Patent number 6,463,156
    • Issue date Oct 8, 2002
    • Comptoir de la Technologie
    • Lionel Gaudriot
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Muffling wall

    • Patent number 6,173,806
    • Issue date Jan 16, 2001
    • Itoon
    • Sadakuni Ito
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Sound-absorbing structure

    • Patent number 4,244,439
    • Issue date Jan 13, 1981
    • Elektronikcentralen
    • Jens Wested
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3602331

    • Patent number 3,602,331
    • Issue date Aug 31, 1971
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

  • Information Patent Application

    INTERFERENCE NOISE-CONTROL UNIT

    • Publication number 20220081855
    • Publication date Mar 17, 2022
    • Wavebreaker AB
    • Tony JOHANSSON
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    DIFFRACTOR FOR DIFFRACTING SOUND

    • Publication number 20160362855
    • Publication date Dec 15, 2016
    • 4SILENCE B.V.
    • Ysbrand Hans Wijnant
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    ROAD WITH SOUND DIFFRACTORS

    • Publication number 20120263524
    • Publication date Oct 18, 2012
    • Universiteit Twente
    • Ysbrand Hans Wijnant
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Noise reduction device

    • Publication number 20080135328
    • Publication date Jun 12, 2008
    • MK SEIKO CO., LTD.
    • Shoichi Takeda
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Active sound reduction apparatus and active noise insulation wall h...

    • Publication number 20060251267
    • Publication date Nov 9, 2006
    • Keizo Ohnishi
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Noise reducing equipment

    • Publication number 20050263343
    • Publication date Dec 1, 2005
    • Hiroshi Yano
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Noise reducing equipment

    • Publication number 20050258000
    • Publication date Nov 24, 2005
    • Hiroshi Yano
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Active sound reduction apparatus and active noise insulation wall h...

    • Publication number 20010046303
    • Publication date Nov 29, 2001
    • Keizo Ohnishi
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES