Patents by Inventor Keith WJ Barnham

Keith WJ Barnham 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).

  • Radiation concentrator for a photovoltaic device
    Patent number: 6476312
    Abstract: Concentrator for use with photovoltaic devices includes a waveguide (2) incorporating quantum dots. The quantum dots red-shift the incident radiation to produce red-shifted radiation which is internally reflected within the waveguide (2). A photovoltaic device (10) converts the red-shifted radiation to electrical energy.
    Type: Grant
    Filed: January 2, 2002
    Date of Patent: November 5, 2002
    Assignee: Imperial College of Science, Technology and Medicine
    Inventor: Keith WJ Barnham