Patents by Inventor Edward A. Dudis

Edward A. Dudis 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).

  • Method of fabricating a charge plate for an ink jet printing device
    Patent number: 4378631
    Abstract: A method is provided for forming a charge plate (10) for an ink jet printing device which includes coating a relatively more difficult to deplate metal layer (24) on a relatively easier to deplate core wire (22), mounting a plurality of the coated wires (20) in spaced parallel relation on a nonconductive support plate (12) and attaching leads to the metal layer (24) and then deplating the core wire (22) to leave the coating to form charge tunnels in the charge plate defining cylindrical holes through which droplets of printing liquid can pass to be charged by the electrodes.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: April 5, 1983
    Assignee: The Mead Corporation
    Inventors: Donald L. Head, Edward A. Dudis