Patents by Inventor Bertalan Lakatos

Bertalan Lakatos 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).

  • Sound absorbing building component of synthetic resin sheeting
    Patent number: 4425981
    Abstract: A sound-absorbing building component for indoor paneling consisting of at least two superimposed sheets, preferably made of a synthetic resin. At least one of the sheets is provided with cup-shaped indentations lying side-by-side in the manner of a grid, the bottom surfaces of these indentations being excitable to lossy vibrations upon the incidence of sound. The upper rims of the cup-shaped indentations are all covered by a further planar sheet which is likewise capable of vibrations. This further sheet seals off the air volumes contained in the individual cup-shaped indentations in an airtight fashion. Small lumpy or irregularly-sized bodies can be provided on the bottom surfaces of the cup-shaped indentations.
    Type: Grant
    Filed: November 17, 1981
    Date of Patent: January 17, 1984
    Assignee: Fraunhofer-Gesellschaft Zur Forderung der Angewandten Forschung e.V.
    Inventors: Norbert Kiesewetter, Bertalan Lakatos