Patents by Inventor Walter V. Burnham, III

Walter V. Burnham, III 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).

  • Nitrification activity test (NAT): procedure to monitor nitrifier biomass
    Patent number: 5907094
    Abstract: The present invention relates to a test procedure for evaluating nitrification activity which takes thirty minutes and accurately demonstrates a correlation of the nitrification activity when compared to ammonia nitrogen removal efficiencies. The test procedure involves treating sludge samples with an ammonium nitrogen/carbonate medium and a buffer and measuring BOD, and then adding thiourea and again measuring BOD. The nitrification activity is determined by subtracting the two BOD measurements.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: May 25, 1999
    Inventors: Walter V. Burnham, III, Frederic A. Jagush
  • Procedure to recover from nitrification upsets
    Patent number: 5849192
    Abstract: A method to recover from nitrification upsets comprising modifying bioreactor pH by addition of an acid source and addition of an inorganic carbon (IC) source.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: December 15, 1998
    Assignee: BASF Corporation
    Inventors: Frederic A. Jagush, Walter V. Burnham, III