Patents by Inventor Shih Kai Pao

Shih Kai Pao 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).

  • System for sensing position of spin dryer cover
    Patent number: 6571488
    Abstract: Embodiments of the present invention relate to an apparatus for spin drying substrates in a spin dryer tank. A spin dryer cover is movable between a closed position to close an opening of the spin dryer tank and an open position to open the spin dryer tank, and a cylinder is coupled with the spin dryer cover. The cylinder is movable in a first operation to move the spin dryer cover to the open position and movable in a second operation to move the spin dryer cover to the closed position. A system for sensing the position of the spin dryer cover comprises a cylinder sensor configured to sense the first operation and the second operation of the cylinder. A cover sensor is configured to sense the position of the spin dryer cover. A logic circuit is configured to output a cover opening signal indicating that the spin dryer cover is in the open position when the cylinder sensor senses the first operation of the cylinder and the cover sensor senses that the spin dryer cover is in the open position.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: June 3, 2003
    Assignee: Mosel Vitelic, Inc.
    Inventors: Yu Chih Lin, Chih Hsin Tsai, Ming Hua Shih, Shih Kai Pao
  • System for sensing position of spin dryer cover
    Publication number: 20020166255
    Abstract: Embodiments of the present invention relate to an apparatus for spin drying substrates in a spin dryer tank. A spin dryer cover is movable between a closed position to close an opening of the spin dryer tank and an open position to open the spin dryer tank, and a cylinder is coupled with the spin dryer cover. The cylinder is movable in a first operation to move the spin dryer cover to the open position and movable in a second operation to move the spin dryer cover to the closed position. A system for sensing the position of the spin dryer cover comprises a cylinder sensor configured to sense the first operation and the second operation of the cylinder. A cover sensor is configured to sense the position of the spin dryer cover. A logic circuit is configured to output a cover opening signal indicating that the spin dryer cover is in the open position when the cylinder sensor senses the first operation of the cylinder and the cover sensor senses that the spin dryer cover is in the open position.
    Type: Application
    Filed: March 1, 2002
    Publication date: November 14, 2002
    Applicant: MOSEL VITELIC, INC., A Taiwanese Corporation
    Inventors: Yu Chih Lin, Chih Hsin Tsai, Ming Hua Shih, Shih Kai Pao