Patents by Inventor Wen-Tun Lee

Wen-Tun Lee 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).

  • Electric fan
    Patent number: 6705835
    Abstract: A fan provided with a smoke detector wired to a CPU in a switch to start the fan if smoke detected exceeds a certain level; and an ion generator is provided to generate ions to neutralize substances carrying hazardous cations; a first conductor on a screen holder wired to the CPU and in off-position state is conducted by contacting a second conductor provided on a front screen so that the fan blades are disabled when both conductors are disconnected once the front screen is removed.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: March 16, 2004
    Inventor: Wen-Tun Lee
  • Electric fan
    Publication number: 20030206801
    Abstract: A fan provided with a smoke detector wired to a CPU in a switch to start the fan if smoke detected exceeds a certain level; and an ion generator is provided to generate ions to neutralize substances carrying hazardous cations; a first conductor on a screen holder wired to the CPU and in off-position state is conducted by contacting a second conductor provided on a front screen so that the fan blades are disabled when both conductors are disconnected once the front screen is removed.
    Type: Application
    Filed: May 6, 2002
    Publication date: November 6, 2003
    Inventor: Wen-Tun Lee