TREA

Aleksandr Petrovich Demchenko

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  • Petersburg, RU
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Patents Grantslast 30 patents

  • Information Patent Grant

    Acoustic waveguide
    • Patent number 11,360,054
    • Issue date Jun 14, 2022
    • Aleksandr P. Demchenko
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Ultrasonic fluid level sensor
    • Patent number 11,280,661
    • Issue date Mar 22, 2022
    • Aleksandr P. Demchenko
    • G01 - MEASURING TESTING

Patents Applicationslast 30 patents

  • Information Patent Application

    SENSOR FOR VIBRATION DENSIMETER
    • Publication number 20230067613
    • Publication date Mar 2, 2023
    • Aleksandr P. DEMCHENKO
    • G01 - MEASURING TESTING
  • Information Patent Application

    Ultrasonic Fluid Level Sensor
    • Publication number 20200370943
    • Publication date Nov 26, 2020
    • Aleksandr P. DEMCHENKO
    • G01 - MEASURING TESTING
  • Information Patent Application

    Acoustic Waveguide
    • Publication number 20200371067
    • Publication date Nov 26, 2020
    • Aleksandr P. DEMCHENKO
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    Liquid level measuring device
    • Publication number 20040182149
    • Publication date Sep 23, 2004
    • Nikolai Ivanovich Balin
    • G01 - MEASURING TESTING