Patents by Inventor James B. Hanson

James B. Hanson 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 leak detector and method therefor
    Patent number: 4888455
    Abstract: In the absence of moisture, a separation between a pair of electrical contacts is maintained by a material that becomes frangible when moistened. When the material becomes moist, it breaks and the contacts close.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: December 19, 1989
    Inventor: James B. Hanson