Patents by Inventor Gerald N. Perry

Gerald N. Perry 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).

  • Filter medium
    Patent number: 4211661
    Abstract: A method and apparatus of producing a filter medium of a relatively strong substrate and a fibrous felt layer bonded to the substrate by needle punching the felt through the substrate and fusing the fibers protruding through the perforations to the substrate and each other.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: July 8, 1980
    Assignee: Chave & Earley, Inc.
    Inventor: Gerald N. Perry