Patents by Inventor Jeffrey Scott Dupont

Jeffrey Scott Dupont 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: 6583095
    Abstract: The present invention relates to an improved process for synthesizing organic compounds for use as bleach activators.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: June 24, 2003
    Assignee: Procter & Gamble Company
    Inventors: Jeffrey Scott Dupont, Robert Richard Dykstra
  • Patent number: 6527690
    Abstract: The invention relates to a process for purifying and decolorizing a phenyl ester salt. The process combines a phenyl ester salt with a solvent to form a mixture and then stirs the mixture to form a slurry. The phenyl ester salt is substantially insoluble in this solvent. The process then collects the phenyl ester salt from the slurry. The collected phenyl ester salt may then be optionally dried or recrystallized. The collected phenyl ester salt is dissolved in a solvent to form a solution. The solution is decolorized and then spray dried to form a powder of the phenyl ester salt. As a result of the process the phenyl ester salt powder has a higher purity and an improved color as compared to the starting phenyl ester salt.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: March 4, 2003
    Inventors: Bhaskar Krishna Arumugam, Michael Eugene Burns, Dimmick Lee Bymaster, Jeffrey Scott DuPont, Robert Richard Dykstra, Robert Lee Eagan, Eddie Joseph Eckart, Jarvey Eugene Felty, Jr., Kevin John Fontenot, Jeffrey William Green, Shane Kipley Kirk, Gary Paul Lutz, Tony Lee Sander, Thomas Hugh Williams, George Chester Zima
  • Patent number: 6452035
    Abstract: The present invention relates to a sulfation process comprising the steps of: a) reacting a tertiary amine with a sulfation precursor having the formula: wherein R1 is C1-C22 alkyl, C7-C22 alkylenearyl, and mixtures thereof; to form an admixture comprising a quaternized amine and a sulfating species; and b) reacting a hydroxyl species with said admixture to form a sulfated hydroxyl species. The process of the present invention is adaptable to sulfating a wide range of alcohols including the hydroxyl unit which terminates a polyalkoxylate moiety which are prevalent in the area of surfactants, inter alia, alkyl ethoxy sulfates.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: September 17, 2002
    Assignee: The Procter & Gamble Co.
    Inventors: Jeffrey Scott Dupont, Eugene Paul Gosselink
  • Publication number: 20020128505
    Abstract: The invention relates to a process for purifying and decolorizing a phenyl ester salt. The process combines a phenyl ester salt with a solvent to form a mixture and then stirs the mixture to form a slurry. The phenyl ester salt is substantially insoluble in this solvent. The process then collects the phenyl ester salt from the slurry. The collected phenyl ester salt may then be optionally dried or recrystallized. The collected phenyl ester salt is dissolved in a solvent to form a solution. The solution is decolorized and then spray dried to form a powder of the phenyl ester salt. As a result of the process the phenyl ester salt powder has a higher purity and an improved color as compared to the starting phenyl ester salt.
    Type: Application
    Filed: June 4, 2001
    Publication date: September 12, 2002
    Inventors: Bhaskar Krishna Arumugam, Michael Eugene Burns, Dimmick Lee Bymaster, Jeffrey Scott Dupont, Robert Richard Dykstra, Robert Lee Eagan, Eddie Joseph Eckart, Jarvey Eugene Felty, Kevin John Fontenot, Jeffrey William Green, Shane Kipley Kirk, Gary Paul Lutz, Tony Lee Sander, Thomas Hugh Williams, George Chester Zima
  • Publication number: 20020103101
    Abstract: The invention relates to stabilized amido acid compositions. More particularly, the invention relates to compositions of amido acids, such as 6-nonanoylamidohexanoic acid, stabilized with antioxidants. The stabilized amido acid compositions are useful in the manufacture of bleach activators such as sodium nonanamidohexanoyloxybenzenesulfonate. Bleach activators made from the stabilized amido acids of the invention are capable of possessing improved coloration.
    Type: Application
    Filed: June 1, 2001
    Publication date: August 1, 2002
    Inventors: Dale Elbert Van Sickle, George Chester Zima, Jeffrey Scott DuPont, Robert Richard Dykstra
  • Patent number: 6369250
    Abstract: The present invention relates to a process for the preparation of a purified salt of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate. The process comprises the steps of: (a) providing a source of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate; (b) admixing the source with a water-based purification system to form a purification mixture, the water-based purification system having water present at a ratio of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate to water ranging from about 1:0.05 to about 1:50, preferably from about 1:0.1 to about 1:40; (c) separating a purified salt of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate from the purification mixture; and (d) collecting said purified salt of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate. In preferred embodiments, the purification mixture includes a processin aide such as ethyl alcohol, propyl alcohol, isopropyl alcohol, acetone and mixtures thereof.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: April 9, 2002
    Assignee: Procter & Gamble Company
    Inventors: Robert Richard Dykstra, Jeffrey Scott Dupont, Michael Eugene Burns
  • Publication number: 20020019552
    Abstract: The present invention relates to a sulfation process comprising the steps of:
    Type: Application
    Filed: August 1, 2001
    Publication date: February 14, 2002
    Applicant: The Procter & Gamble Company
    Inventors: Jeffrey Scott Dupont, Eugene Paul Gosselink
  • Patent number: 6207843
    Abstract: N-(alkanoyl)aminoalkanoyloxybenzensulfonate bleach activators are prepared in an improved process using amine catalyst and/or amido solvents.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: March 27, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Jeffrey Scott DuPont, Stephen Wayne Heinzman
  • Patent number: 6060443
    Abstract: Mixtures of mid-chain branched primary alkyl sulfate surfactants useful in cleaning compositions, especially for lower water temperature applications, alone or formulated with other surfactants for the purpose of modifying the low temperature cleaning properties of the cleaning formulations. The present invention also relates to novel mid-chain branched primary alkyl sulfate surfactants suitable for use in surfactant mixtures.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: May 9, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Thomas Anthony Cripe, Daniel Stedman Connor, Phillip Kyle Vinson, James Charles Theophile Roger Burckett-St. Laurent, Kenneth William Willman, Jeffrey Scott Dupont
  • Patent number: 6020303
    Abstract: Mid-chain branched surfactants derived from mid-chain branched primary alkyl hydrophobic groups and hydrophilic groups. The present invention also relates to mixtures of mid-chain branched surfactants useful in laundry and cleaning compositions, especially granular and liquid detergent compositions.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: February 1, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Thomas Anthony Cripe, Daniel Stedman Connor, Phillip Kyle Vinson, James Charles Theophile Roger Burckett-St. Laurent, Kenneth William Willman, Jeffrey John Scheibel, Robert Emerson Stidham, Jeffrey Scott Dupont