Patents by Inventor Joseph Parks

Joseph Parks 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 method
    Patent number: 3974072
    Abstract: Microorganisms are removed from cutting-oil emulsions, and their growth is inhibited by passage through a filter comprising an inorganic fiber.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: August 10, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: James Derek Birchall, David Cowap, Joseph Park