Patents by Inventor Willem Petiet

Willem Petiet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Acoustic vibration generator
    Patent number: 6023123
    Abstract: The invention relates to an arrangement for generating sound waves or anti-sound waves. For the sound waves. For the sound wave transducer, use can be made of window glass (1) or other types of transparent material, which is set into vibration by means of one or a plurality of actuators (6), such as piezo elements or actuators based on electrostatic attraction and repulsion.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: February 8, 2000
    Assignee: Hollandse Signaalapparaten B.V.
    Inventor: Willem Petiet