Patents by Inventor Timothy Mark Sivavec

Timothy Mark Sivavec 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).

  • Monitoring of volatile organic compounds in groundwater with an in-situ sampling device
    Patent number: 6272938
    Abstract: A sampling device can monitor contaminants in groundwater. The sampling device comprises a semi-permeable membrane for contact with groundwater, in which the semi-permeable membrane is permeable to contaminants and impermeable to groundwater; an inner chamber formed by the semi-permeable membrane for containing the contaminants from the groundwater that diffuse through the semi-permeable membrane; and a sensor device communicating with the inner chamber. The sensor device is in contact with the contaminants contained within the inner chamber for monitoring the contaminants.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: August 14, 2001
    Assignee: General Electric Company
    Inventors: Sunita Singh Baghel, Patricia Denise Mackenzie, Timothy Mark Sivavec, Angelo Anthony Bracco, Joseph James Salvo
  • Method for treating aqueous composition contaminants
    Patent number: 6238570
    Abstract: A non-iron sulfide is introduced into an iron-containing zone to form ferrous sulfide. A contaminated aqueous composition is then contacted with the ferrous sulfide to react with said contaminants.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: May 29, 2001
    Assignee: General Electric Company
    Inventor: Timothy Mark Sivavec
  • Treatment for contaminated media
    Patent number: 6197187
    Abstract: A method for treating a contaminated media. The method comprises disposing electrodes at the contaminated media, injecting a salt-containing solution into contaminated media, applying an electric voltage between electrodes imposed peripherally to the region, forming ions from the salt-containing solution, and migrating the ions between the electrodes across the contaminated media. The ions of the salt-containing solution migrate into at least a portion of the contaminated media to treat the contaminated media.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: March 6, 2001
    Assignee: General Electric Company
    Inventors: Roy Fred Thornton, Andrew Philip Shapiro, Timothy Mark Sivavec
  • Composition and method for ground water remediation
    Patent number: 5750036
    Abstract: Addition of ferrous ions to clay and ferric minerals in the ground creates in situ reactive zones which dehalogenate halogenated contaminants in ground water flowing through the reactive zone.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: May 12, 1998
    Assignee: General Electric Company
    Inventor: Timothy Mark Sivavec