Patents by Inventor David Shrewsbury

David Shrewsbury 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).

  • Waveguide for radiation detection system
    Patent number: 5812262
    Abstract: An ultra violet radiation detector comprises a slice of silica (10) having an entrance slit (18) from which radiation diverges to a curved reflective face (20, 22) which reflects it to a planar diffraction grating (28) as a convergent beam. The grating focuses a required spectral order on an array of UV detectors (24). Usually the first order spectrum is focused. The detector may be hand held.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: September 22, 1998
    Assignee: 4D Controls Limited
    Inventors: Andrew Ridyard, David Shrewsbury