Patents by Inventor Nicholas Pfeiffer

Nicholas Pfeiffer 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).

  • ANGULAR FILTERS FOR OPTICAL TOMOGRAPHY OF HIGHLY SCATTERING MEDIA
    Publication number: 20080177169
    Abstract: An angular filter is provided, including a straight tunnel within a material, the tunnel having a roughened surface. When scattered light enters the tunnel, and strikes the roughened surface at a shallow angle, the scatter light is further scattered within the tunnel, striking the surface of the tunnel a multiplicity of times. Each such strike partially absorbs the light ray, such that the intensity of the scattered light exiting the tunnel is minimized.
    Type: Application
    Filed: January 19, 2007
    Publication date: July 24, 2008
    Inventors: Glenn Harrison Chapman, Bozena Kaminska, Paulman Konn Yan Chan, Fartash Vasefi, Nicholas Pfeiffer
  • Method and apparatus for determining alcohol content in a breath sample
    Publication number: 20070283745
    Abstract: A method and apparatus for determining alcohol content in a breath sample, comprising at least one of breath sample exhaust means, resistance lowering means, and correction factor calculation means.
    Type: Application
    Filed: November 29, 2006
    Publication date: December 13, 2007
    Inventor: Nicholas Pfeiffer
  • Breath tester vending machine
    Patent number: D547380
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: July 24, 2007
    Assignee: Atkinson Venture Holdings Ltd.
    Inventors: Nicholas Pfeiffer, Craig Atkinson