Patents by Inventor John D. Proynoff

John D. Proynoff 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).

  • Ion generator or electrostatic environmental conditioner
    Patent number: 4227894
    Abstract: An improved ion generator comprising a set of specially shaped negative electrodes, a positive accelerator in the form of a ring or flat plates, and a grounded screen. The parts are serially arranged in a tube or channel and connected to the output terminals of a high-voltage direct-current power source. Negative ions are produced for the permeation of the atmosphere in living quarters.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: October 14, 1980
    Inventor: John D. Proynoff