Patents by Inventor Ger L. M. Jansen

Ger L. M. Jansen 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).

  • Multistage tracking system
    Patent number: 4768180
    Abstract: A multistage tracking system for an optical disk used in recording, storing and transmitting data and the like. The tracking system using a movable sled with objective lens for coarse tracking of individual tracks on the disk and a stationary tilting mirror providing fine tracking on a selected track.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: August 30, 1988
    Assignee: Laser Magnetic Storage International Company
    Inventors: Piet J. M. Janssen, Ger L. M. Jansen