Patents by Inventor Walter James Ratcliffe

Walter James Ratcliffe 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).

  • Water repellant fabrics
    Patent number: 4107368
    Abstract: Water repellant fabrics and methods of making them from yarns which have been given a water repellant treatment prior to incorporation into the fabric. A typical fabric is woven from a repellant treated polyester and polypropylene.
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: August 15, 1978
    Assignee: Dominion Textile Limited
    Inventors: Walter James Ratcliffe, Robert W. Kolb, S. Esson Bruce