Patents by Inventor Wen-Chi Hung

Wen-Chi Hung 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).

  • Security system used in an electronic instrument to detect illegal opening of the casing of the electronic instrument
    Patent number: 6469626
    Abstract: A security system installed in the casing of a computer to detect the condition of the casing of the computer, the security system including a switch which is switched on when the casing of the computer is opened, or switched off when the casing of the computer is closed, and a logic circuit connected to the switch and triggered by the switch to output an alarm signal to a burglar alarm when the casing of the computer is opened.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: October 22, 2002
    Assignee: First International Computer Inc.
    Inventor: Wen-Chi Hung