Patents by Inventor Sharon H. Jureller

Sharon H. Jureller 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).

  • Polysaccharide modification in densified fluid
    Patent number: 5977348
    Abstract: This invention relates to a process for chemically modifying polysaccharides in a densified fluid. In particular, the modification includes esterification and/or etherification of a starch in supercritical carbon dioxide. The process is advantageous in that it allows for a high degree of substitution without the use of organic solvents or repeated reactions.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: November 2, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Rosemarie Harris, Sharon H. Jureller, Judith L. Kerschner, Peter T. Trzasko, Robert W. R. Humphreys
  • Epoxidation of olefins via certain manganese complexes
    Patent number: 5516738
    Abstract: A method for epoxidizing olefins is provided wherein an olefin and an oxygenating agent are contacted together in the presence of a manganese complex catalyst having at least one manganese atom coordinated with a nitrogen-containing ligand such that the manganese atom to coordinated nitrogen atom is 1:3 and thereafter isolating the resultant epoxide product. Catalyst compositions are also provided formed from the adsorption of the manganese complex catalyst onto a solvent insoluble support.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: May 14, 1996
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Sharon H. Jureller, Judith L. Kerschner, Robert Humphreys
  • Epoxidation of olefins via certain manganese complexes
    Patent number: 5329024
    Abstract: A method for epoxidizing olefins is provided wherein an olefin and an oxygenating agent are contacted together in the presence of a manganese complex catalyst having at least one manganese atom coordinated with a nitrogen-containing ligand such that the manganese atom to coordinated nitrogen atom is 1:3 and thereafter isolating the resultant epoxide product. Catalyst compositions are also provided formed from the adsorption of the manganese complex catalyst onto a solvent insoluble support.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: July 12, 1994
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Sharon H. Jureller, Judith L. Kerschner, Robert Humphreys
  • Manganese catalyst for activating hydrogen peroxide bleaching
    Patent number: 5194416
    Abstract: Novel bleach and oxidation catalysts are reported as well as a bleaching-detergent composition employing these catalysts and a method for removing stains from substrates. The catalysts are manganese complexes of the formula:[LMn.sup.IV (OR).sub.3 ]Y,whereinMn is manganese in the +4 oxidation state;R is a C.sub.1 -C.sub.20 radical selected from the group consisting of alkyl, cycloalkyl, aryl, benzyl and radical combinations thereof;at least two R radicals may also be connected to one another so as to form a bridging unit between two oxygens that coordinate with the manganese;L is a ligand selected from a C.sub.3 -C.sub.60 radical having at least 3 nitrogen atoms coordinating with the manganese; andY is an oxidatively-stable counterion.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: March 16, 1993
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Sharon H. Jureller, Judith L. Kerschner