Patents by Inventor Lawrence S.-W. Mok

Lawrence S.-W. Mok 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).

  • Electronic package having active means to maintain its operating temperature constant
    Patent number: 5491610
    Abstract: An electronic package having an active cooling system for maintaining a semiconductor chip at approximately a constant temperature by monitoring the present temperature of the chip and varying the air flow over a heat sink in thermal contact with the chip in response to the temperature. In addition, the temperature difference between the semiconductor chip module and a printed circuit board is also monitored to maintain that difference at a preset value. The air flow is varied by a variable speed fan or a variable direction baffle.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: February 13, 1996
    Assignee: International Business Machines Corporation
    Inventors: Lawrence S.-W. Mok, Sampath Purushothaman, Bahgat G. Sammakia, Janusz S. Wilczynski, Tien Y. Wu