Patents Represented by Attorney Beth Goldstein Lewis
  • Patent number: 5476608
    Abstract: Liquid laundry detergent compositions containing anionic or nonionic surfactant, citric acid or a water-soluble salt thereof, proteolytic enzyme, cellulase, and a mixture of 1,2 propane diol and boric acid or its derivative. The compositions are prepared by adding the diol and boric acid before adding the citric acid/salt to the composition. This order of addition improves the stability of the cellulase.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: December 19, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Stanton L. Boyer, Timothy J. Farwick
  • Patent number: 5474691
    Abstract: The present invention relates to a dryer-added fabric treatment article of manufacturing to reduce the fading of fabrics from sunlight comprising:I. a composition comprising:A. from about 5% to about 75%, by weight of the composition, of a sun- fade protection active selected from the group consisting of:i. a non-fabric staining, light stable, antioxidant compound preferably containing at least one C.sub.8 -C.sub.22 hydrocarbon fatty organic moiety;ii. a non-fabric staining, light stable, sunscreen compound; andiii. mixtures thereof,B. from about 10% to about 95% by weight of the composition of a fabric conditioning compound; andII. a substrate, on which said composition is attached, which provides for release of an effective amount of said sun-fade protection active and said fabric conditioning compound onto fabrics in an automatic laundry dryer at automatic laundry dryer operating temperatures;wherein said antioxidant compound is a solid having a melting point of less than about 80.degree. C.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: December 12, 1995
    Assignee: The Procter & Gamble Company
    Inventor: John C. Severns
  • Patent number: 5466870
    Abstract: Amine oxide surfactants contaminated with nitrite are treated under acidic conditions with materials such as maleic acid and diethylenetriaminepentaacetate (DTPA) to reduce nitrite levels below 1 ppm. Thus, C.sub.12-13 dimethyl amine is oxidized with hydrogen peroxide in the presence of maleic acid and DTPA to reduce nitrite levels. The resulting nitrite-free amine oxide is employed in various detergent compositions.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: November 14, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Larry E. Miller, Gene P. Hawkins, Bernard G. Durham
  • Patent number: 5460736
    Abstract: The present invention relates to a solid particulate or liquid rinse-added fabric softening composition containing specific chlorine scavengers. The solid particulate composition, comprises from about 50% to about 95%, by weight of the composition, of biodegradable, cationic quaternary ammonium fabric softening compound and an effective amount of chlorine scavenger selected from the group consisting of: amines; ammonium salts; amino acids, but not lysine; polyamino acids; polyethyleneimines; polyamines, but not di(higher alkyl)cyclic amines nor their condensation products; polyamineamides; polyacrylamides; and mixtures thereof. The solid particulate composition further comprises from about 0% to about 30%, by weight of the composition, of a modifier, for viscosity, dispersibility, or both; and from about 0% to about 20%, by weight of the composition, of a pH modifier. The liquid composition comprises from about 0.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: October 24, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Donald M. Swartley
  • Patent number: 5440061
    Abstract: The present invention relates to an improved process for preparing fatty acids from alkyl, preferably methyl esters comprising mixing the fatty acid ester with water, acid catalyst, and DMSO in order to form a single phase reaction mixture. The single phase reaction mixture is then heated to a temperature of from about 70.degree. C. to about 130.degree. C. to hydrolyze the fatty acid ester into the corresponding acid and volatile alcohol and removing the volatile alcohol. The acid catalyst is heat and water stable and the reaction mixture is essentially free of C.sub.2 -C.sub.5 carboxylic acids. The initial stoichiometric ratio of the water to the ester is at least about 1:1.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: August 8, 1995
    Assignee: The Procter & Gamble Company
    Inventor: Michael S. Gibson
  • Patent number: 5429628
    Abstract: The present invention relates to compositions and articles such as catamenials, diapers, pantiliners, paper towels, tissues, underarm shields, etc., which minimize odor caused from body fluids through the incorporation of an effective amount of cyclodextrin, having a particle size of less than 12 microns. Combinations of small particle size cyclodextrins with other odor-controlling materials are also disclosed.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: July 4, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Dean V. Phan