Patents by Inventor Patrick K. Tan

Patrick K. Tan 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).

  • Optical head with flying lens
    Patent number: 5105408
    Abstract: A micro-objective lens is carried on an air bearing slider with an optical passage through which the lens focuses an energy beam onto a spot on an optical data storage medium. The slider accomplishes automatic focusing. An RF coil is affixed to the slider facing the storage medium and surrounding the beam axis. The proximity of the coil lowers power switching requirements.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: April 14, 1992
    Assignee: Digital Equipment Corporation
    Inventors: Neville K. S. Lee, James W. Howard, Patrick K. Tan, Walter Hrytsay