Patents by Inventor Duane A. Rockafellow

Duane A. Rockafellow 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).

  • Reducible metal salt-dry electrographic visible image recording process
    Patent number: 4234670
    Abstract: A method for producing visible images in certain charge sensitive, dry processable recording elements. Image recording is accomplished by flowing, in a resistive recording element containing a reducible metal compound, an imagewise pattern of electrical current of sufficient magnitude to produce therein a storable latent image. The metal compound in the latent image areas is subsequently reduced by a dry development technique to produce a visible image.
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: November 18, 1980
    Assignee: Eastman Kodak Company
    Inventors: Joseph Y. Kaukeinen, Duane A. Rockafellow