Patents by Inventor Steven Hilary Leitch

Steven Hilary Leitch 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).

  • Cosmetic compositions containing hydrophobically modified nonionic polymer and unsaturated quaternary ammonium surfactant
    Patent number: 5855878
    Abstract: Disclosed is a vehicle system having a thickening system which comprises a nonionic long-chain alkylated water-soluble polymer and a specific cationic quaternary ammonium surfactant component dispersed in a compatible solvent. The quaternary surfactant component has an iodine value of at least about 15. The quaternary surfactant component is characterized by having a sufficient level of unsaturated C.sub.14 -C.sub.22 alkyl or C.sub.14 -C.sub.22 alkyl amido C.sub.2 -C.sub.6 alkylene radicals such that the average iodine value is at least about 15. These vehicle systems are useful in cosmetic compositions which are used to deliver an active component to the hair or skin. The vehicle systems are particularly useful in hair care compositions, especially rinse-off hair conditioning and styling compositions.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 5, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Timothy Woodrow Coffindaffer, Melissa Smith Monich, Steven Hilary Leitch, Raymond Edward Bolich, Jr., Patrick Columkille McCall
  • Cosmetic compositions containing hydrophobically modified nonionic polymer and unsaturated quaternary ammonium surfactant
    Patent number: 5843418
    Abstract: Disclosed is a vehicle system having a thickening system which comprises a nonionic long-chain alkylated water-soluble polymer and a specific cationic quaternary ammonium surfactant component dispersed in a compatible solvent. The quaternary surfactant component has an iodine value of at least about 15. The quaternary surfactant component is characterized by having a sufficient level of unsaturated C.sub.14 -C.sub.22 alkyl or C.sub.14 -C.sub.22 alkyl amido C.sub.2 -C.sub.6 alkylene radicals such that the average iodine value is at least about 15. These vehicle systems are useful in cosmetic compositions which are used to deliver an active component to the hair or skin. The vehicle systems are particularly useful in hair care compositions, especially rinse-off hair conditioning and styling compositions.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: December 1, 1998
    Assignee: The Procter & Gamble Co.
    Inventors: Timothy Woodrow Coffindaffer, Melissa Smith Monich, Steven Hilary Leitch, Raymond Edward Bolich, Jr., Patrick Columkille McCall
  • Cosmetic compositions containing hydrophobically modified nonionic polymer and unsaturated quaternary ammonium surfactant
    Patent number: 5807545
    Abstract: Disclosed is a vehicle system having a thickening system which comprises a nonionic long-chain alkylated water-soluble polymer and a specific cationic quaternary ammonium surfactant component dispersed in a compatible solvent. The quaternary surfactant component has an iodine value of at least about 15. The quaternary surfactant component is characterized by having a sufficient level of unsaturated C.sub.14 -C.sub.22 alkyl or C.sub.14 -C.sub.22 alkyl amido C.sub.2 -C.sub.6 alkylene radicals such that the average iodine value is at least about 15. These vehicle systems are useful in cosmetic compositions which are used to deliver an active component to the hair or skin. The vehicle systems are particularly useful in hair care compositions, especially rinse-off hair conditioning and styling compositions.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 15, 1998
    Assignee: The Procter & Gamble Co.
    Inventors: Timothy Woodrow Coffindaffer, Melissa Smith Monich, Steven Hilary Leitch, Raymond Edward Bolich, Jr., Patrick Columkille McCall, Jose Antonio Carballada
  • Cosmetic compositions containing hydrophobically modified nonionic polymer and unsaturated quaternary ammonium surfactant
    Patent number: 5807543
    Abstract: Disclosed is a vehicle system having a thickening system which comprises a nonionic long-chain alkylated water-soluble polymer and a specific cationic quaternary ammonium surfactant component dispersed in a compatible solvent. The quaternary surfactant component has an iodine value of at least about 15. The quaternary surfactant component is characterized by having a sufficient level of unsaturated C.sub.14 -C.sub.22 alkyl or C.sub.14 -C.sub.22 alkyl amido C.sub.2 -C.sub.6 alkylene radicals such that the average iodine value is at least about 15. These vehicle systems are useful in cosmetic compositions which are used to deliver an active component to the hair or skin. The vehicle systems are particularly useful in hair care compositions, especially rinse-off hair conditioning and styling compositions.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: September 15, 1998
    Assignee: The Procter & Gamble Co.
    Inventors: Timothy Woodrow Coffindaffer, Melissa Smith Monich, Steven Hilary Leitch, Raymond Edward Bolich, Jr., Patrick Columkille McCall, Jose Antonio Carballada
  • Hair care compositions having styling/conditioning agent and plasticizer
    Patent number: 5753216
    Abstract: Disclosed are hair care compositions containing a hair styling/conditioning copolymer solubilized or dispersed in a volatile silicone fluid, wherein the copolymer-volatile silicone fluid solution further comprises a nonvolatile plasticizer.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: May 19, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Steven Hilary Leitch, Lisa Jo Bartz, Kathleen Brown Fish
  • Portion of a cleaning implement
    Patent number: D518935
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: April 11, 2006
    Assignee: The Procter & Gamble Company
    Inventors: Steven Hilary Leitch, Glenn Allen Bradbury, Benjamin Jacob Clare