Patents by Inventor Julie A. McShea

Julie A. McShea 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).

  • Removal of hydrogen sulphides
    Patent number: 4909925
    Abstract: Hydrogen sulphide is scavenged from a feedstock comprising crude oil and hydrogen sulphide by adding a compound of general formula ##STR1## to the feedstock. R is an alkyl group containing 1 to 18 carbon atoms, an aryl group, or an alkyl aryl group wherein the alkyl moiety contains 1 to 18 carbon atoms and L is a leaving group.Preferred scavengers include acetic anhydride and triacetamide.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: March 20, 1990
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Philip K. G. Hodgson, Julie A. McShea, Edward J. Tinley
  • Removal of hydrogen sulphide
    Patent number: 4802973
    Abstract: Hydrogen sulphide is scavenged from a feedstock comprising crude oil and hydrogen sulphide by adding a compound of general formula: ##STR1## to the feedstock. X and Y are carbon or nitrogen atoms and the interatomic bond is triple or double as appropriate. Any two or more of R.sup.1 -R.sup.4 are organic groups containing electronegative functional groups. The remaining two or less of R.sup.1 -R.sup.4 are hydrocarbyl groups, hydrogen atoms or zero.Preferred scavengers include di-isopropylazo dicarboxylate and dimethylacetylene dicarboxylate.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: February 7, 1989
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Philip K. G. Hodgson, Julie A. McShea, Edward J. Tinely