Patents by Inventor James K. Fredrickson

James K. Fredrickson 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).

  • Enhancement of in situ microbial remediation of aquifers
    Patent number: 5265674
    Abstract: Methods are provided for remediating subsurface areas contaminated by toxic organic compounds. An innocuous oil, such as vegetable oil, mineral oil, or other immiscible organic liquid, is introduced into the contaminated area and permitted to move therethrough. The oil concentrates or strips the organic contaminants, such that the concentration of the contaminants is reduced and such contaminants are available to be either pumped out of the subsurface area or metabolized by microorganisms. Microorganisms may be introduced into the contaminated area to effect bioremediation of the contamination. The methods may be adapted to deliver microorganisms, enzymes, nutrients and electron donors to subsurface zones contaminated by nitrate in order to stimulate or enhance denitrification.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: November 30, 1993
    Assignee: Battelle Memorial Institute
    Inventors: James K. Fredrickson, Fred J. Brockman, Gary P. Streile, John W. Cary, John F. McBride
  • Method for solubilization of low-rank coal using low molecular weight cell-free filtrates derived from cultures of coriolus versicolor
    Patent number: 5084160
    Abstract: A method is provided for isolating a less than 5,000 dalton molecular weight extracellular product from Coriolus versicolor. The extracellular product is useful for biosolubilizing low-rank coals to form water-soluble products.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: January 28, 1992
    Inventors: Dorothy L. Stewart, James K. Fredrickson, James A. Campbell, John W. Pyne, Jr., Roger M. Bean, Bary W. Wilson
  • Method for solubilization of low-rank coal using a cell-free enzymatic system
    Patent number: 4882274
    Abstract: A method is provided for isolating an extracellular product from white rot fungi. The extracellular product is useful for biosolubilizing low-rank coals to form water-soluble products.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: November 21, 1989
    Assignee: Electric Power Research Institute, Inc.
    Inventors: John Pyne, Jr., Dorothy L. Stewart, James K. Fredrickson, Martin S. Cohen