Patents by Inventor John C. Bruno

John C. Bruno 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).

  • Apparatus and method for sputtering carbon
    Patent number: 5830331
    Abstract: A hydrogenated carbon film for magnetic thin film recording media is manufactured by alternating current magnetron sputtering in an atmosphere containing argon and a hydrocarbon gas. Targets mounted side-by-side cyclically sputter and discharge charge buildup according to an alternating current. Shielding between the targets directs electrons toward the anode at a given time.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: November 3, 1998
    Assignee: Seagate Technology, Inc.
    Inventors: Taesun E. Kim, Hyung J. Lee, Yao-Tzung R. Shih, John C. Bruno, Robert B. Zubeck, Dennis R. Hollars