Patents by Inventor James N. Halvis

James N. Halvis 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).

  • Lateral ultra-high efficiency solar cell
    Patent number: 8153888
    Abstract: A high-efficiency lateral multi-junction solar cell (C) includes ultra-low profile planar spectral band splitting micro-optics having a shortpass filter (48) reflecting desired frequencies of light (24) to a reflective mirror (58) combined with spectrally optimized photovoltaic (solar) cells.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: April 10, 2012
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Joseph T. Smith, James N. Halvis, Thomas J. Knight
  • LATERAL ULTRA-HIGH EFFICIENCY SOLAR CELL
    Publication number: 20090320913
    Abstract: A high-efficiency lateral multi-junction solar cell (C) includes ultra-low profile planar spectral band splitting micro-optics having a shortpass filter (48) reflecting desired frequencies of light (24) to a reflective mirror (58) combined with spectrally optimized photovoltaic (solar) cells.
    Type: Application
    Filed: May 1, 2008
    Publication date: December 31, 2009
    Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Joseph T. Smith, James N. Halvis, Thomas J. Knight