Patents by Inventor Ting-Chieng Teng

Ting-Chieng Teng 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).

  • Methods and apparatus for initializing a planar motor
    Patent number: 6777896
    Abstract: Methods and apparatus are provided for initializing a planar motor. A magnet array floating above a coil array may reside in one of a definite number of positions upon the introduction of current into the coil array. Torque characteristics of the magnet array are acquired when driving the magnet array with no phase offsets. Phase offsets for driving the magnet array with substantially no yaw can then be determined by analyzing the torque characteristics.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: August 17, 2004
    Assignee: Nikon Corporation
    Inventor: Ting-Chieng Teng
  • Methods and apparatus for initializing a planar motor
    Publication number: 20040007920
    Abstract: Methods and apparatus are provided for initializing a planar motor. A magnet array floating above a coil array may reside in one of a definite number of positions upon the introduction of current into the coil array. Torque characteristics of the magnet array are acquired when driving the magnet array with no phase offsets. Phase offsets for driving the magnet array with substantially no yaw can then be determined by analyzing the torque characteristics.
    Type: Application
    Filed: July 9, 2002
    Publication date: January 15, 2004
    Applicant: Nikon Corporation
    Inventor: Ting-Chieng Teng