Patents by Inventor John P. Spangler

John P. Spangler 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).

  • Edge barrier to prevent spin valve sensor corrosion and improve long term reliability
    Patent number: 6600637
    Abstract: A magnetic data storage and retrieval system has a bottom shield, a first half gap positioned on the bottom shield, a sensor layer positioned on the first half gap, a second half gap positioned on the sensor layer; and a top shield positioned on the second half gap. The sensor layer includes a magnetoresistive sensor having sidewalls and a barrier surrounding and in direct contact with the sidewalls of the magnetoresistive sensor.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: July 29, 2003
    Assignee: Seagate Technology, L.L.C.
    Inventors: Hong Wang, Robbee L. Grimm, Matthew T. Johnson, John P. Spangler, Craig A. Ballentine, Qing He, Steven C. Riemer, Brian J. Daniels