Patents by Inventor Mark Gubbins

Mark Gubbins 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).

  • Publication number: 20050128637
    Abstract: A perpendicular writer of the present invention comprises a main pole connected to two return poles and further includes one or more shorting shields thereby reducing erasure field on double layer perpendicular media. The perpendicular writer may include side shorting shields connecting the first and second return poles thereby modifying the crosstrack field gradient. Additionally, the perpendicular writer may include a top shorting shield modifying the downtrack gradient and may additionally include a bottom shorting shield for further reduction of erasure fields. The distance between the main pole and the shorting shields may be modified to customize the write field gradient.
    Type: Application
    Filed: December 16, 2003
    Publication date: June 16, 2005
    Applicant: Seagate Technology LLC
    Inventors: Alan Johnston, Mark Gubbins, William O'Kane