Patents by Inventor Arthur R. Hart

Arthur R. Hart 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).

  • Protective capping apparatus for an ink-jet pen
    Patent number: 5682186
    Abstract: An ink pen is provided with a protective capping apparatus to protect against damage caused by the ingress of dirt and debris, the accumulation or solidification of ink, the discharge of static electricity or the like. The protective capping apparatus has a protective cap movable between an open position and a closed position. In the closed position the protective cap shields a portion of an ink pen such as the ink-jets or the electrical contacts.
    Type: Grant
    Filed: March 10, 1994
    Date of Patent: October 28, 1997
    Assignee: Hewlett-Packard Company
    Inventors: Jaime H. Bohorquez, Charles E. Schinner, John H. Dion, Arthur R. Hart, Niels J. Nielsen