Patents by Inventor Walter E. Partridge

Walter E. Partridge 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).

  • Prevention of shipworm infestation of wooden marine structures
    Patent number: 4098955
    Abstract: An improved method is provided for solving the age-old problem of wood-boring marine organisms. Wooden structures which are exposed to sea water can be protected from shipworm infestation by surrounding the structure with a nonwoven fabric having an effective pore size of less than 200 microns. Nonwoven fabrics of non-cellulosic organic or inorganic fibers are suitable. A self-bonded nonwoven fabric of polypropylene fibers is preferred. The fabric has high tensile and tear strengths, good puncture resistance, and a small effective pore size. The method may be used on new structures or old ones that are already infested with marine wood-borers.
    Type: Grant
    Filed: October 7, 1976
    Date of Patent: July 4, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Walter E. Partridge