Patents by Inventor Hans R. Tschudi

Hans R. Tschudi 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).

  • Process for constructing a structural element that absorbs airborne sound
    Patent number: 4755416
    Abstract: The process makes it possible to determine for sound-absorbing structural elements made of a compact or foamed plastic with cup-shaped protuberances, the thickness and area size of the resonance surfaces that is required for an optimal sound aborption, as a function of the height of the protuberances and the endeavored resonance frequency.The use of this process also makes it possible to adapt the frequency response curve of the sound absorption coefficient of the structural element to the frequency response curve of the sound level of a noise source.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: July 5, 1988
    Assignee: Matec Holding AG
    Inventors: Alfred Schneider, Hans R. Tschudi