Patents by Inventor Donna L. Bedard

Donna L. Bedard 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).

  • Stimulation of microbial para-dechlorination of polychlorinated biphenyls
    Patent number: 5540838
    Abstract: A method for stimulating microbial dechlorination of the unflanked para-chlorine substituent of PCBs having one or two unflanked para-chlorine substituents in an active PCB-contaminated sediment having a population of microorganisms capable of para-dechlorinating PCBs involves incubation of the sediment with a fluorochlorobiphenyl compound such as 2,6-difluoro-4-chlorobiphenyl that has a para-chlorine at position 4, hydrogens on positions 3 and 5, and fluorines on positions 2 and 6, for a time and under conditions sufficient to decrease the levels of PCBs containing unflanked para-chlorines.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 30, 1996
    Assignee: General Electric Company
    Inventors: Lynn A. Smullen, Donna L. Bedard
  • Microbial dechlorination of polychlorinated biphenyl compounds
    Patent number: 5484729
    Abstract: An improved process for anerobic microbial dechlorination of polychlorinated biphenyl compounds in sediment containing microorganisms capable of dechlorinating polychlorinated biphenyls which includes adding and admixing the sediment with a halogen substituted benzoic acid, salicylic acid or a lower alkyl ester of the acids.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: January 16, 1996
    Assignee: General Electric Company
    Inventors: Kim A. DeWeerd, Donna L. Bedard
  • Bioremediation method
    Patent number: 5227069
    Abstract: A method is provided for bioremediating aged PCBs such as Aroclor 1260 in aquatic sediments under anerobic conditions by stimulating the dechlorination of the aged PCBs through addition of brominated or iodinated biphenyls or through the addition of a microbial inoculum from another location in addition to brominated or iodinated biphenyls.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: July 13, 1993
    Assignee: General Electric Company
    Inventors: Heide M. Van Dort, Donna L. Bedard
  • Method for biodegrading PCBS
    Patent number: 4876201
    Abstract: A method is provided for effecting the reduction of PCB contamination in organic waste by utilizing a particular strain of a biologically pure culture of Alcaligenes eutrophus under aerobic conditions.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: October 24, 1989
    Assignee: General Electric Company
    Inventors: Donna L. Bedard, Michael J. Brennan, Jr.
  • Alcaligenes eutrophus for biodegrading PCBs
    Patent number: 4843007
    Abstract: A method is provided for effecting the reduction of PCB contamination in organic waste by utilizing a particular strain of a biologically pure culture of Alcaligenes eutrophus under aerobic conditions.
    Type: Grant
    Filed: April 24, 1986
    Date of Patent: June 27, 1989
    Assignee: General Electric Company
    Inventors: Donna L. Bedard, Michael J. Brennan, Jr.