TREA

Ralph T. Campagna

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  • Danielson, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Variable sound attenuator with hearing aid
    • Patent number 10,045,133
    • Issue date Aug 7, 2018
    • Natan Bauman
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Variable noise attenuator with adjustable attenuation
    • Patent number 9,521,480
    • Issue date Dec 13, 2016
    • Natan Bauman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Variable sound attenuator
    • Patent number 9,333,116
    • Issue date May 10, 2016
    • Natan Bauman
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Hearing aid system
    • Patent number 7,720,245
    • Issue date May 18, 2010
    • Auditory Licensing Company, LLC
    • Natan Bauman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Hearing aid system
    • Patent number 7,421,086
    • Issue date Sep 2, 2008
    • Vivatone Hearing Systems, LLC
    • Natan Bauman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Variable Sound Attenuator With Hearing Aid
    • Publication number 20180139549
    • Publication date May 17, 2018
    • Natan Bauman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Variable Sound Attenuator With Hearing Aid
    • Publication number 20160255449
    • Publication date Sep 1, 2016
    • Natan Bauman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Variable Noise Attenuator with Adjustable Attenuation
    • Publication number 20150036834
    • Publication date Feb 5, 2015
    • Natan Bauman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Variable Sound Attenuator
    • Publication number 20140270257
    • Publication date Sep 18, 2014
    • Natan Bauman
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    HEARING AID SYSTEM
    • Publication number 20080273733
    • Publication date Nov 6, 2008
    • VIVATONE HEARING SYSTEMS LLC
    • Natan Bauman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Hearing aid system
    • Publication number 20070036374
    • Publication date Feb 15, 2007
    • Natan Bauman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE