Patents by Inventor Malk Duwensee

Malk Duwensee 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).

  • Simultaneous measurement of contact potential and slider body clearance in a magnetic disk drive
    Patent number: 7310197
    Abstract: A method for simultaneously measuring contact potential and slider body clearance in a hard disk drive. In embodiments of the present invention, a plurality of direct current (DC) pulses are applied between a slider body and a hard disk of a magnetic disk drive. The contact potential voltage between the slider body and the hard disk is determined in response to applying the plurality of direct current (DC) pulses. The voltage of the plurality of direct current (DC) pulses is increased until a contact between the slider body and the hard disk is detected.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: December 18, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Peter Michael Baumgart, Malk Duwensee, Bernhard E. Knigge
  • Simultaneous measurement of contact potential and slider body clearance in a magnetic disk drive
    Publication number: 20060284620
    Abstract: A method for simultaneously measuring contact potential and slider body clearance in a hard disk drive. In embodiments of the present invention, a plurality of direct current (DC) pulses are applied between a slider body and a hard disk of a magnetic disk drive. The contact potential voltage between the slider body and the hard disk is determined in response to applying the plurality of direct current (DC) pulses. The voltage of the plurality of direct current (DC) pulses is increased until a contact between the slider body and the hard disk is detected.
    Type: Application
    Filed: June 15, 2005
    Publication date: December 21, 2006
    Inventors: Peter Baumgart, Malk Duwensee, Bernhard Knigge