Patents by Inventor Brian D. Bush

Brian D. Bush 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).

  • Method for computing the frequency of a signal from in-phase and quadrature components
    Publication number: 20080253481
    Abstract: A novel method and apparatus for computing the phase derivative and also the frequency of a received signal from digital baseband In-Phase (I) and Quadrature (Q) samples is derived and implemented. The resulting method computes the phase derivative and frequency of a received signal from I and Q data directly without the intermediate problem of phase unwrapping required for computing the derivative of modulo-mapped phase. The apparatus is intended for use both in single channel systems performing digital frequency demodulation and in direction-finding systems computing differential phase across two channels.
    Type: Application
    Filed: April 16, 2007
    Publication date: October 16, 2008
    Inventors: Paul D. Rivkin, Brian D. Moore, Charles F. Estrella, Brian D. Bush
  • Substituted 3,6,7,8-tetrahydroimidazo[4,5-d][1,3]diazepine-8-ol herbicides
    Patent number: 5089045
    Abstract: Herbicidal 3,6,7,8-tetrahydroimidazo[4,5-d]-[1,3]diazepin-8-ol derivatives of the formula: ##STR1## and sugar conjugates thereof, compositions containing them, and a process for their preparation.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: February 18, 1992
    Assignee: Schering Agrochemicals Limited
    Inventors: Brian D. Bush, Duncan A. Gates, David Langley