Patents by Inventor Webster Cash

Webster Cash 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).

  • Deep shadow occulter
    Patent number: 7828451
    Abstract: Methods and apparatus are disclosed for occulting light. The occulter shape suppresses diffraction at any given size or angle and is practical to build because it can be made binary to avoid scatter. Binary structures may be fully opaque or fully transmitting at specific points. The diffraction suppression is spectrally broad so that it may be used with incoherent white light. An occulter may also include substantially opaque inner portion and an at least partially transparent outer portion. Such occulters may be used on the ground to create a deep shadow in a short distance, or may be used in space to suppress starlight and reveal exoplanets.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: November 9, 2010
    Assignee: The Regents of the University of Colorado, a body corporate
    Inventor: Webster Cash
  • Deep Shadow Occulter
    Publication number: 20080180802
    Abstract: Methods and apparatus are disclosed for occulting light. The occulter shape suppresses diffraction at any given size or angle and is practical to build because it can be made binary to avoid scatter. Binary structures may be fully opaque or fully transmitting at specific points. The diffraction suppression is spectrally broad so that it may be used with incoherent white light. An occulter may also include substantially opaque inner portion and an at least partially transparent outer portion. Such occulters may be used on the ground to create a deep shadow in a short distance, or may be used in space to suppress starlight and reveal exoplanets.
    Type: Application
    Filed: July 20, 2007
    Publication date: July 31, 2008
    Applicant: University of Colorado
    Inventor: Webster Cash