Patents by Inventor William P. Vavra

William P. Vavra 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).

  • Writer heater for thermal protrusion shape control in a magnetic writer
    Patent number: 7573682
    Abstract: A transducing device having a storage interface surface includes a writer having a pole tip region, a coil having a width positioned around the writer, and a heating element. The heating element extends to near the storage interface surface. A portion of the heating element is at least as wide as the coil. The heating element heats the writer in response to current flow through the heating element.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: August 11, 2009
    Assignee: Seagate Technology LLC
    Inventors: Ladislav R. Pust, Michael T. Johnson, Richard P. Larson, Thu-Van T. Nguyen, David C. Seets, William P. Vavra
  • Wire-assisted write device with high thermal reliability
    Publication number: 20080259493
    Abstract: A magnetic device includes a first pole having a first pole tip. A conductor, which is adjacent to an edge of the first pole tip, carries current to generate a second field that augments a first field generated by the first pole. The width of the conductor is in the range of about one to about five times the width of the trailing edge of the first pole tip.
    Type: Application
    Filed: February 5, 2007
    Publication date: October 23, 2008
    Applicant: Seagate Technology LLC
    Inventors: Mark T. Kief, Johannes Van Ek, Eric S. Linville, William P. Vavra, Vladyslav A. Vas'ko
  • Magnetoresistive sensor with reduced operating temperature
    Patent number: 7064934
    Abstract: A magnetoresistive (MR) sensor having reduced operating temperature is disclosed. The MR sensor, which includes an MR stack having a magnetoresistive layer, is configured to operate in a current-perpendicular-to-plane (CPP) mode wherein a sense current flows substantially perpendicular to a longitudinal plane of the magnetoresistive layer. The MR sensor further includes a thermal sink layer positioned with respect to the MR stack to reduce an operating temperature of the magnetoresistive sensor. The thermal sink layer is made of a material having high thermal conductivity, and is preferably separated from the MR stack by a metallic cap or seed layer.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: June 20, 2006
    Assignee: Seagate Technology LLC
    Inventors: Sining Mao, William P. Vavra, Eric S. Linville
  • Magnetoresistive sensor with reduced operating temperature
    Publication number: 20040252414
    Abstract: A magnetoresistive (MR) sensor having reduced operating temperature is disclosed. The MR sensor, which includes an MR stack having a magnetoresistive layer, is configured to operate in a current-perpendicular-to-plane (CPP) mode wherein a sense current flows substantially perpendicular to a longitudinal plane of the magnetoresistive layer. The MR sensor further includes a thermal sink layer positioned with respect to the MR stack to reduce an operating temperature of the magnetoresistive sensor. The thermal sink layer is made of a material having high thermal conductivity, and is preferably separated from the MR stack by a metallic cap or seed layer.
    Type: Application
    Filed: June 12, 2003
    Publication date: December 16, 2004
    Applicant: Seagate Technology LLC
    Inventors: Sining Mao, William P. Vavra, Eric S. Linville