Patents by Inventor Josef F. Irregeher

Josef F. Irregeher 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).

  • Foam material sound absorption
    Patent number: 4584232
    Abstract: The present invention relates to a sound absorbing member comprising a fiber grid insert disposed between and bonded to two open cell foam panels.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: April 22, 1986
    Assignee: Illbruck GmbH Schaumstofftechnik
    Inventors: Werner Frank, Josef F. Irregeher