Patents by Inventor Theodore L. Wilkinson

Theodore L. Wilkinson 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 filter
    Patent number: 5149437
    Abstract: An improved filter device is provided for removing contaminants from water comprising a filter housing having an inlet at one end for water to be purified and an oulet for purified water at an opposing end, said filter device including in sequence first, second and third layers of purification material, a first layer of purification material comprising metallic particles which establish a suitable redox potential in the first layer, a second layer of purification material comprising activated carbon, and a third layer of purification material comprising a weak acid ion exchange resin.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: September 22, 1992
    Inventors: Theodore L. Wilkinson, Frank J. Sork