Patents by Inventor Carlo Strack

Carlo Strack 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).

  • Filtration material
    Patent number: 3937860
    Abstract: A high temperature resistant filtration material is produced having outer layers of a nonwoven fabric made of fibers of an aromatic polyamide having repeating units of the formula ##SPC1##A first inner layer of nonwoven fabric made of glass fibers and a second inner layer woven from yarns of glass or said aromatic polyamide. The fibers of the layers are interentangled by needling to form an integral structure.
    Type: Grant
    Filed: April 23, 1975
    Date of Patent: February 10, 1976
    Assignee: J. P. Stevens & Co., Inc.
    Inventors: Irwin J. Gusman, Carlo Strack