Patents by Inventor Brian J. Stefan

Brian J. Stefan 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).

  • Patent number: 7938183
    Abstract: Amines or ammonia and amines may be used to enhance recovery of heavy hydrocarbons. The amines or ammonia and amines alone or with water, steam or an oil solvent are combined with the heavy hydrocarbons to promote the transport of the heavy hydrocarbons. The amines or ammonia and amines may be injected downhole or admixed with heavy hydrocarbon containing ore on the surface, optionally with water or steam. Ammonia may be used alone with high quality steam.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: May 10, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Paul Robert Hart, Brian J. Stefan, Piyush Srivastava, Justin D. Debord
  • Publication number: 20090218099
    Abstract: Amines or ammonia and amines may be used to enhance recovery of heavy hydrocarbons. The amines or ammonia and amines alone or with water, steam or an oil solvent are combined with the heavy hydrocarbons to promote the transport of the heavy hydrocarbons. The amines or ammonia and amines may be injected downhole or admixed with heavy hydrocarbon containing ore on the surface, optionally with water or steam. Ammonia may be used alone with high quality steam. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: December 8, 2008
    Publication date: September 3, 2009
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Paul Robert Hart, Brian J. Stefan, Piyush Srivastava, Justin D. Debord