Patents by Inventor Rick Thellmann

Rick Thellmann 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).

  • Patent number: 6013181
    Abstract: The water filtration system has nine filter elements serially arranged in a hollow cylinder housing with a water inlet end and water outlet end having pipe fittings, such as, 3/4 inches for installation in the main inlet water line of a household. For a normal household the housing is approximately 20 inches long and 4 inches in diameter. The first filter element on the water inlet end is a loose weave polyester fiber pad; the second filter element is multiple irregular polyethylene beads filling approximately 3 inches of the housing length; the third and seventh filter sections are a very fine plain wool filter floss; the fourth, sixth and eighth filter sections are one millimeter wool fibers impregnated with carbon to equal two thirds of the total weight of the fibers; the fifth filter element is multiple pharmaceutical grade carbon granules filling approximately 4 1/2 inches of the housing length; and the ninth filter element is a fine mesh nylon screen.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: January 11, 2000
    Inventor: Rick Thellmann