Patents by Inventor James Walshe

James Walshe 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 socks
    Patent number: 4959045
    Abstract: A construction of filter sock which has a panel (1) with two leaves (2,3) of unequal width such that when folded along a foldline (4) the leaves form a double leaf panel with a projecting side (9). The side (9) is folded back along a second fold line (11) over the free side (6) of leaf (2). The sides (6,9) and leaf (2) are secured together by an overlock stitching (13) to form a tube (12). The invention provides a method of making the filter sock.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: September 25, 1990
    Inventors: Philip J. Hartley, James Walshe