Patents by Inventor Neil Cheung

Neil Cheung 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).

  • Virtual variable valve intake and exhaust for the internal combustion engine
    Patent number: 8215613
    Abstract: A cylindrical housing assembly with an adjustable aperture or orifice using an iris shutter system to control the volumetric flow of fuel mixture or exhaust gas by movable blades or leaflets arranged inside a sealed enclosure which is operated by external actuators connected in series.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: July 10, 2012
    Inventor: Neil Cheung
  • Virtual variable valve intake and exhaust for the internal combustion engine
    Publication number: 20090302252
    Abstract: A device is created with an adjustable aperture or orifice using the iris shutter type mechanism to control the volumetric flow of fuel mixture or exhaust gas by movable blades or leaflets arranged inside a sealed enclosure which is operated by external actuators connected in series.
    Type: Application
    Filed: June 6, 2008
    Publication date: December 10, 2009
    Inventor: Neil Cheung