Patents by Inventor Hong Feng Du

Hong Feng Du 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).

  • Patent number: 6107938
    Abstract: An infrared proximity and remote control wall switch positioned between a fixture and a voltage source for allowing a fixture to operate in one of a manual and automatic mode. The infrared proximity and remote control wall switch includes a three position switch operable between a first on position connecting the fixture directly to the voltage source, a second off position for disconnecting the fixture from the voltage source and a third auto position for allowing automatic operation of the fixture. An infrared emitter generates an infrared signal and an infrared receiver is connected to receive one of the infrared signal generated by the infrared emitter and reflected by an object and an infrared signal generated by a conventional television, video cassette recorder or hi-fi remote control unit. A device is connected to the infrared receiver for filtering the signal received by said infrared receiver and eliminate noise signals therefrom.
    Type: Grant
    Filed: April 4, 1998
    Date of Patent: August 22, 2000
    Inventors: Hong Feng Du, Jing Cheng Luo