Patents by Inventor Beat Keel

Beat Keel 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).

  • Self aligned magnetic poles using sacrificial mask
    Patent number: 4992901
    Abstract: In a method of manufacturing a thin film magnetic head having aligned top and bottom pole tip pieces, a sacrificial mask protects the upper pole tip while the exposed non-aligned portions of the gap material and lower pole tip are removed. The sacrificial mask is deposited using a self alignment technique.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: February 12, 1991
    Assignee: Seagate Technology, Inc.
    Inventors: Beat Keel, Arthur Calderon, Simon Liao