Patents by Inventor David Sheen

David Sheen 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: 7758769
    Abstract: A method of reducing the build up of ice or snow on roads. The method comprising mixing a solid de-icing material such as rock salt with a non brine additive solution such as an aqueous solution of a refined molasses stream. The de-icing material and additive solution being carried on a lorry 10, and being mixed immediately prior to spreading on a road.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: July 20, 2010
    Assignee: Salt Union Limited
    Inventors: Alan David Sheen, Neil Alexander Rosenburgh
  • Publication number: 20090026411
    Abstract: A method of reducing the build up of ice or snow on roads. The method comprising mixing a solid de-icing material such as rock salt with a non brine additive solution such as an aqueous solution of a refined molasses stream. The de-icing material and additive solution being carried on a lorry 10, and being mixed immediately prior to spreading on a road.
    Type: Application
    Filed: June 23, 2008
    Publication date: January 29, 2009
    Inventors: Alan David Sheen, Neil Alexander Rosenburgh
  • Publication number: 20070205936
    Abstract: A method and apparatus to remove human features utilizing at least one transmitter transmitting a signal between 200 MHz and 1 THz, the signal having at least one characteristic of elliptical polarization, and at least one receiver receiving the reflection of the signal from the transmitter. A plurality of such receivers and transmitters are arranged together in an array which is in turn mounted to a scanner, allowing the array to be passed adjacent to the surface of the item being imaged while the transmitter is transmitting electromagnetic radiation. The array is passed adjacent to the surface of the item, such as a human being, that is being imaged. The portions of the received signals wherein the polarity of the characteristic has been reversed and those portions of the received signal wherein the polarity of the characteristic has not been reversed are identified. An image of the item from those portions of the received signal wherein the polarity of the characteristic was reversed is then created.
    Type: Application
    Filed: March 24, 2005
    Publication date: September 6, 2007
    Inventors: Douglas McMakin, David Sheen, Thomas Hall
  • Publication number: 20070075889
    Abstract: An arrangement of receivers and transmitters used in wideband holographic imaging using a reduced number of physical antenna elements compared to established techniques and systems. At least one of the receivers is configured to receive the reflected signal from three or more of transmitters, and at least one transmitter is configured to transmit a signal to an object, the reflection of which will be received by at least three receivers. The improved arrays are easily incorporated into existing microwave and millimeter wave holographic imaging equipment utilizing the existing mechanical features of this equipment, as well as the existing wideband holographic imaging algorithms and electronics for constructing images.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 5, 2007
    Inventors: David Sheen, Douglas McMakin