Patents by Inventor Wah L. Chan

Wah L. Chan 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).

  • Detachable joystick handle
    Patent number: 5607158
    Abstract: A joystick includes a base and handle, the handle having one or more function buttons which operate switches in response to manipulation of the buttons. The handle is detachably mounted on a pipe extending from the base. Electrical connections for the switches are joined to a socket connector in the handle which receives a printed circuit board or other connector mounted on the top of the pipe, so that electrical connection to the switches is made as the handle is mounted in position.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: March 4, 1997
    Inventor: Wah L. Chan
  • Game control pad
    Patent number: D341164
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: November 9, 1993
    Inventor: Wah L. Chan
  • Game control pad
    Patent number: D342100
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: December 7, 1993
    Inventor: Wah L. Chan
  • Game control pad
    Patent number: D353162
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: December 6, 1994
    Inventor: Wah L. Chan
  • Game control pad
    Patent number: D353410
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: December 13, 1994
    Inventor: Wah L. Chan
  • Game control pad
    Patent number: D359992
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: July 4, 1995
    Inventor: Wah L. Chan
  • Game control pad
    Patent number: D360436
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: July 18, 1995
    Inventor: Wah L. Chan
  • Game control pad
    Patent number: D362030
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: September 5, 1995
    Inventor: Wah L. Chan
  • Game control pad
    Patent number: D362277
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: September 12, 1995
    Inventor: Wah L. Chan
  • Joystick handle
    Patent number: D362872
    Type: Grant
    Filed: September 7, 1994
    Date of Patent: October 3, 1995
    Inventor: Wah L. Chan