Patents by Inventor Billy Crue

Billy Crue 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).

  • Perpendicular magnetic recording head with write pole which reduces flux antenna effect
    Patent number: 6646827
    Abstract: A perpendicular magnetic recording head includes a write pole designed to reduce or eliminate problems caused by stray magnetic fields. By positioning a write coil close to the air bearing surface of the recording head, and controlling the geometry of the write pole, the necessity of a return pole to provide a closed magnetic flux path through the write pole and the magnetic recording media is eliminated. The use of an open magnetic path produced by a single write pole reduces or eliminates problems caused by stray magnetic fields which, in conventional perpendicular magnetic recording head designs, travel through the soft magnetic underlayer of the recording media and enter the recording head through the return pole.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: November 11, 2003
    Assignee: Seagate Technology LLC
    Inventors: Sakhrat Khizroev, Dmitri Litvinov, Billy Crue