Patents by Inventor Macgregor L. Fogelsong

Macgregor L. Fogelsong 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).

  • Anaerobic biodegradation of unsaturated, saturated, aromatic and halogenated hydrocarbons
    Patent number: 6251657
    Abstract: An apparatus and method for anaerobic biodegradation, bioremediation or bioprocessing of hydrocarbons dissolved in an aqueous matrix, such as wastewater, groundwater, or slurry. Dissolved alkanes (saturated hydrocarbons), alkenes (unsaturated hydrocarbons), aromatic hydrocarbons and/or halogenated hydrocarbons are metabolized or cometabolized. In one form, the invention involves introducing an aqueous stream comprising at least one dissolved aromatic hydrocarbon (such as benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, phenol, o-cresol, m-cresol, or p-cresol) and a dissolved oxide of nitrogen [such as nitrate (NO3−), nitrite (NO2−), nitric oxide (NO) and nitrous oxide (N2O)] to a reactor, and operating said reactor under conditions that support denitrification of the aromatic hydrocarbon.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: June 26, 2001
    Assignee: YES Technologies
    Inventors: Robert M. Hunter, Frank M. Stewart, Tamara Darsow, Macgregor L. Fogelsong
  • Anaerobic biodegradation of unsaturated, saturated, aromatic and halogenated hydrocarbons
    Patent number: 5942117
    Abstract: An apparatus and method for anaerobic biodegradation, bioremediation or bioprocessing of hydrocarbons dissolved in an aqueous matrix, such as wastewater, groundwater, or slurry. Dissolved alkanes (saturated hydrocarbons), alkenes (unsaturated hydrocarbons), aromatic hydrocarbons and/or halogenated hydrocarbons are metabolized or cometabolized. In one form, the invention involves introducing an aqueous stream comprising at least one dissolved aromatic hydrocarbon (such as benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, phenol, o-cresol, m-cresol, or p-cresol) and a dissolved oxide of nitrogen ?such as nitrate (NO.sub.3.sup.-), nitrite (NO.sub.2.sup.-), nitric oxide (NO) and nitrous oxide (N.sub.2 O)!to a reactor, and operating said reactor under conditions that support denitrification of the aromatic hydrocarbon.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: August 24, 1999
    Assignee: Yellowstone Environmental Science, Inc.
    Inventors: Robert M. Hunter, Frank M. Stewart, Tamara Darsow, Macgregor L. Fogelsong