Patents by Inventor Christopher David Leahy

Christopher David Leahy 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: 6133212
    Abstract: A liquid personal cleansing composition comprising: (a) from about 1% to about 15% by weight of short chain alkyl sulphate surfactant having an average from 8 to 10 carbon atoms on the alkyl chain and mixtures thereof; (b) from about 1% to about 15% by weight of C.sub.12 to C.sub.22 alkyl ethoxy sulphate surfactant having an average degree of ethoxylation of from about 1 to about 6; (c) from about 0.1% to about 10% of water-soluble auxiliary surfactant selected from anionic surfactant other than C.sub.8 to C.sub.10 alkyl sulphate, nonionic, zwitterionic and amphoteric and mixtures thereof; and optionally (d) from about 0.01% to about 5% of cationic conditioning polymer; and (e) water; wherein the ratio of short chain alkyl sulphate to alkyl ethoxy sulphate is in the range of from about 1:3 to about 3:1, more preferably from about 2:1 to about 1:2.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: October 17, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Russell Phillip Elliott, Christopher David Leahy, Sara Louise Holloway, Charles Marie Du Reau
  • Patent number: 6074996
    Abstract: A liquid personal cleansing composition comprising: (a) from about 1% to about 15% by weight of short chain alkyl sulphate surfactant having an average of from 8 to 10 carbon atoms in the alkyl chain and mixtures thereof; (b) from about 1% to about 60% by weight of water-soluble auxiliary surfactant selected from anionic surfactant other than C.sub.8 to C.sub.10 alkyl sulphate, nonionic, zwitterionic and amphoteric surfactants and mixtures thereof; (c) from about 0.01% to about 5% by weight of cationic polymeric skin conditioning agent; and (d) water. The products demonstrate excellent in-use efficacy benefits including mildness, a moisturised skin feel, excellent rinsibility and good product stability and lather attributes.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: June 13, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Russell Phillip Elliott, Matthew Thomas Green, Christopher David Leahy
  • Patent number: 5994280
    Abstract: Cleansing and moisturizing personal cleansing compositions which contain from about 5% to about 50% of a surfactant; from about 3% to about 40% of an insoluble, nonionic oil or wax or mixture thereof; from about 0.1% to about 8% by weight of a fatty acid having an average chain length of from about 10 to about 18 carbon atoms; from about 1.5% to about 10% by weight of citric acid or water soluble citrate salt or mixture thereof; and water are disclosed.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: November 30, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Michel Joseph Giret, Christopher David Leahy
  • Patent number: 5910472
    Abstract: A liquid personal cleansing composition comprising: (a) from about 5% to about 60% by weight of water-soluble surfactant selected from anionic, nonionic and amphoteric surfactants and mixtures thereof; and (b) from about 0.01% to about 10% by weight of a hydrophobically modified nonionic cellulose ether selected from C.sub.14 -C.sub.18 alkyl and alkenyl modified, hydroxyethyl cellulose ethers having a degree of nonionic substitution in the range of from about 2.2 to about 2.8 and a degree of hydrophobic substitution in the range of from about 0.4% to about 0.6% by weight; and (c) water, and wherein the composition displays a shear stress of about 150 Pa at a shear rate in the range from about 400 s.sup.-1 to about 600 s.sup.-1 at 25.degree. C. The products demonstrate excellent in-use efficacy benefits including mildness, a moisturised skin feel, good rinsibility and good product stability.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: June 8, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Russell Phillip Elliott, Matthew Thomas Green, Christopher David Leahy, Eleni Papadimitriou
  • Patent number: 5905062
    Abstract: A liquid personal cleansing composition comprising: a) from about 5% to about 60% by weight of water-soluble surfactant selected from anionic, nonionic and amphoteric surfactants and mixtures thereof; b) from about 0.01% to about 10% by weight of a hydrophobically modified nonionic cellulose ether selected from C.sub.10 -C.sub.24 alkyl and alkenyl modified methyl, hydroxyethyl and hydroxypropyl cellulose ethers having a degree of nonionic substitution in the range of from about 1.8 to about 4 and a degree of hydrophobic substitution in the range of from about 0.1% to about 1% by weight; c) from about 0% to about 10% by weight of a water-soluble polyol; d) from about 0.01% to about 5% by weight of cationic polymeric skin conditioning agent; and e) water, and wherein the composition displays a shear stress of about 150 Pa at a shear rate in the range from about 100 s.sup.-1 to about 600 s.sup.-1 at 25.degree. C.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: May 18, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Russell Phillip Elliott, Matthew Thomas Green, Christopher David Leahy, Eleni Papadimitriou
  • Patent number: D480177
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: September 30, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Makoto Isono, Hideto Maeda, Satomi Nakamura, Tadayasu Koga, Christopher David Leahy, Kentaro Yamamoto, Kazuya Iwata