Patents by Inventor Wendy Jo Davis-Hoover

Wendy Jo Davis-Hoover 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 to predict degradation of a landfill
    Publication number: 20080096188
    Abstract: Determining when a landfill is stabilized by comparing the biological signature of a landfill over a predetermined time period with that of a known stabilized landfill.
    Type: Application
    Filed: October 19, 2006
    Publication date: April 24, 2008
    Applicant: U.S. Environmental Protection Agency EPA
    Inventor: Wendy Jo Davis-Hoover
  • Process for the biodegradation of hydrocarbons and ethers in subsurface soil by introduction of a solid oxygen source by hydraulic fracturing
    Patent number: 7252986
    Abstract: A bioremediation of subsurface soil formations contaminated with hazardous wastes is achieved by hydraulic fracturing of the subsurface soil formation with simultaneous introduction of sodium percarbonate coated with polyvinylidene chloride as a solid oxygen source (SOS) for establishing colonies of the biodegrading bacteria within the fractures of the soil formation.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: August 7, 2007
    Assignee: U. S. Environmental Protection Agency
    Inventors: Wendy Jo Davis-Hoover, Stephen J. Vesper
  • Process for the biodegradation of hydrocarbons and ethers in subsurface soil by introduction of a solid oxygen source by hydraulic fracturing
    Publication number: 20030203475
    Abstract: A bioremediation of subsurface soil formations contaminated with hazardous wastes is achieved by hydraulic fracturing of the subsurface soil formation with simultaneous introduction of sodium percarbonate coated with polyvinylidene chloride as a solid oxygen source (SOS) for establishing colonies of the biodegrading bacteria within the fractures of the soil formation.
    Type: Application
    Filed: March 25, 2003
    Publication date: October 30, 2003
    Inventors: Wendy Jo Davis-Hoover, Stephen J. Vesper
  • Medium for cultivating microorganisms
    Publication number: 20030134405
    Abstract: A medium for culturing microorganisms includes at least one compound which can be used as a source of phosphorus for microorganisms but which at least one compound will not precipitate Pb2+ ions, so that the medium does not form a precipitate in the presence of up to about 25 mM Pb2+ ions. Preferred compounds are O-phospho-L-amino acids. A buffer may be included in the medium. The medium is particularly well suited for remediating lead contaminated site by bioremediation.
    Type: Application
    Filed: November 14, 2002
    Publication date: July 17, 2003
    Inventors: Harry J. Guttman, James A. Ryan, Wendy Jo Davis-Hoover
  • Medium for cultivating microorganisms
    Patent number: 6489157
    Abstract: A medium for culturing microorganisms in the presence of Pb2+ uses as a phosphate component, an O-phosphate-L-amino acid, to provide a source of phosphate for the microorganisms so as to avoid precipitating lead.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: December 3, 2002
    Assignee: The Government of the United States of America as represented by the Administrator of the U.S. Environmental Protection Agency
    Inventors: Harry J. Guttman, James A. Ryan, Wendy Jo Davis-Hoover