Patents Represented by Attorney C. Brant Cook

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  • Bleach precursor compositions
    Patent number: 6200944
    Abstract: A solid bleach precursor composition is provided comprising a bleach precursor and a surfactant system, whereby the composition exhibits effective solublisation of its bleach precursor component.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: March 13, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Anthony Dovey, Sanjeev Sharma
  • Detergent compositions comprising alpha combination of &agr;-amylases for malodor stripping
    Patent number: 6197070
    Abstract: Fabrics are laundered in detergent compositions containing a mixture of &agr;-amylase enzymes to remove malodorous materials.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: March 6, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Thomas Wilhelm Hörner, Kristien Greta Govers
  • Cost effective stain and soil removal aqueous heavy duty liquid laundry detergent compositions
    Patent number: 6194370
    Abstract: Cost effective stain and soil removal aqueous heavy duty liquid laundry detergent compositions are provided. Such compositions comprise relatively low levels of selected aromatic surfactant materials, certain viscosity-enhancing agents, and very large amounts of water. Only minimal amounts of other detergent composition adjuvants are permitted in such compositions.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: February 27, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Johnny Williams, Jr., Hari Achuthan Nair
  • Liquid laundry detergent compositions containing proteolytic enzyme and protease inhibitors
    Patent number: 6180586
    Abstract: Aqueous liquid detergent compositions are described which comprise a proteolytic enzyme wherein the proteolytic activity is reversibly inhibited by a peptide protease inhibitor.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: January 30, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Charles Winston Saunders, John McMillan McIver, Alan Carl Huber, Larry Anthony Smith
  • Dual-step stain removal process
    Patent number: 6171346
    Abstract: Stained areas (2) of fabric are separately treated with a non-aqueous cleaning composition, followed by an aqueous cleaning composition, and by using a hand-held device (1) which is rocked back and forth on said stained areas (2). The fabric (3) is then placed in a bag or other container, together with a sheet substrate releasably containing an aqueous cleaning composition. The bag is tumbled in a hot air clothes dryer to clean and refresh the entire fabric (3).
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: January 9, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Bruce Albert Yeazell, Michael Peter Siklosi
  • Nonaqueous detergent compositions containing bleach precursors
    Patent number: 6165959
    Abstract: A nonaqueous liquid detergent composition comprising a bleach precursor composition comprising: a) a bleach precursor; and b) a surfactant system; and c) an organic acid.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: December 26, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Axel Meyer, Steven Jozef Louis Coosemans, Jean-Pol Boutique, James Pyott Johnston
  • Liquid detergents containing proteolytic enzyme and protease inhibitors
    Patent number: 6165966
    Abstract: Aqueous liquid detergent compositions are described which comprising a proteolytic enzyme wherein the proteolytic activity is reversibly inhibited by a protease inhibitor selected from the group consisting of aldehydes and trifluoromethyl ketones.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: December 26, 2000
    Assignee: The Procter & Gamble Company
    Inventors: John McMillan McIver, Alan Carl Huber, Kirsten Louise McKillop
  • Liquid detergents containing proteolytic enzyme and protease inhibitors
    Patent number: 6162783
    Abstract: Aqueous liquid detergent compositions are described which comprise a proteolytic enzyme wherein the proteolytic activity is reversibly inhibited by a peptide protease inhibitor selected from the group consisting of aldehydes and trifluoromethyl ketones.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: December 19, 2000
    Assignee: The Procter & Gamble Company
    Inventors: John McMillan McIver, Alan Carl Huber, Kirsten Louise McKillop
  • Machine dishwashing and laundry compositions
    Patent number: 6162259
    Abstract: Detergent compositions comprising an amino tricarboxylic acid with a rapid rate of dissolution in a washing liquor exhibit a reduced tendency to leave calcium carbonate, lime soap and other deposits on substrates being cleaned. Dishwashing and laundry compositions comprising percarbonate bleach and methyl glycine diacetic acid are provided.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: December 19, 2000
    Assignee: The Procter & Gamble Company
    Inventor: Fiona Susan Williams (nee Mac Beath)
  • Nonaqueous detergent compositions containing bleach precursors
    Patent number: 6159923
    Abstract: Disclosed is a nonaqueous liquid detergent composition comprising a bleach precursor, said composition having an average particle size of the bleach precursor of less than 600 microns
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: December 12, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Jean-Pol Boutique, Axel Meyer, Steven Jozef Louis Coosemans, James Pyott Johnston, Jean Wevers, Iwein Jozef Maria Jaak Goderis
  • Detergent compositions comprising specific amylase and a specific surfactant system
    Patent number: 6147045
    Abstract: The present invention relates to detergent compositions comprising an oxidative stability-enhanced amylase and a surfactant system wherein the anionic to nonionic surfactants ratio is from 1:1 to 5:1, preferably from 1:1 to 3:1. Such compositions provide improved cleaning and stain removal performance.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: November 14, 2000
    Assignee: The Procter & Gamble Co.
    Inventor: Dimitris Lappas
  • Detergent compositions comprising a specific amylase and a protease
    Patent number: 6140293
    Abstract: The present invention relates to detergent compositions comprising an oxidative stability-enhanced amylase and a protease at a level from 0.0001% to 0.5%, preferably from 0.001% to 0.2%, more preferably from 0.005% to 0.1% pure protease enzyme by weight of total composition. Such compositions provide improved cleaning and stains removal performances.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: October 31, 2000
    Assignee: The Procter & Gamble Company
    Inventor: Dimitris Lappas
  • Detergent compositions containing a lipase variant at low levels
    Patent number: 6133220
    Abstract: The invention concerns detergent compositions comprising lipase variant D96L of the native lipase derived from Humicola lanuginosa present at a level of from 50 LU to 8500 LU per liter wash solution.Using these levels of lipase delivers an improved whiteness maintenance on fabrics.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: October 17, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Andre Baeck, Chandrika Kasturi
  • Enzymatic detergent compositions
    Patent number: 6133227
    Abstract: The present invention relates to detergent compositions comprising an enzyme that increases the water-solubility of fatty acid-containing stains/soils, especially an acid-thiolligase, a desaturase enzyme and/or a glutathione S-transferase. These detergent compositions provide cleaning performance on body soils and/or oily/greasy soils and stains.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: October 17, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Mary Vijayarani Barnabas, Saroj Rai, Ashoke Kumar Mitra, Andre Christian Convents
  • Unsymmetrical acyclic imide bleach activators and compositions employing the same
    Patent number: 6117357
    Abstract: The invention relates to a bleaching composition comprising:I) from about 0.1% to about 70.0% by weight of the composition of an unsymmetrical imide bleach activator having the formula: ##STR1## wherein R.sub.1 is a C.sub.7 -C.sub.13 linear or branched chain saturated or unsaturated alkyl group, R.sub.2 is a C.sub.1 -C.sub.8 linear or branched chain saturated or unsaturated alkyl group, and R.sub.3 is a C.sub.1 -C.sub.4 linear or branched chain saturated or unsaturated alkyl group; andii) from about 0.1% to about 70% by weight of the composition of a source of hydrogen peroxide.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: September 12, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Kevin Lee Kott, Gregory Scot Miracle, Michael Eugene Burns
  • Detergent compositions comprising a pectinesterase enzyme
    Patent number: 6113655
    Abstract: The present invention relates to detergent compositions comprising a pectinesterase, including dishwashing, hard surface cleaning, and laundry compositions. The compositions are useful for significant overall cleaning performance and stain/soil removal benefits. In particular, the compositions are useful for removal of body, plant, fruit juice, and vegetable juice soils and stains.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: September 5, 2000
    Assignee: Procter & Gamble Company
    Inventors: Shuichi Tsunetsugu, Rosa Laura Moese, Andre Cesar Baeck, Ivan Maurice Alfons Jan Herbots
  • Peroxygen bleaching compositions comprising peroxygen bleach and ATMP, suitable for use as a pretreater for fabrics
    Patent number: 6099587
    Abstract: Compositions and methods for removing soils and stains from fabrics and other surfaces employ bleaching activators and aminotrimethylenephosphonic acid (ATMP) at a pH of from greater than 0 to about 6. Compositions comprising ATMP and various sources of peroxide and various types of activators are disclosed.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: August 8, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Stefano Scialla, Valentina Masotti
  • Asymmetrical bleach activators and compositions employing the same
    Patent number: 6096098
    Abstract: The present invention discloses asymmetrical bleach activators for use in both solid and liquid additive, bleaching and detergent compositions. The asymmetrical bleach activators display the unique ability to form both hydrophilic and hydrophobic bleaching agents in aqueous liquors such as bleaching solutions. Thus, fabrics, hard surfaces or dishes having hydrophobic stains such as dingy and or hydrophilic stains such as beverages can be effectively cleaned or bleached using the bleach activators of the present invention.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: August 1, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Gregory Scot Miracle, Robert Richard Dykstra, Kevin Lee Kott, Stefano Scialla
  • Detergent particles comprising metal-containing bleach catalysts
    Patent number: 6093343
    Abstract: The present invention relates to bleach catalyst containing composite particles suitable for incorporation into particulate detergent compositions, said composite particles comprising by weight of the particles a) from 1% to 50% of a metal containing bleach catalyst; b) from 40% to 99% of an encapsulating material; and c) from 0.5% to 20% water.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: July 25, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Michael Crombie Addison, Barry Rowland, Fiona Susan MacBeath
  • Laundry bleaching processes and compositions
    Patent number: 6087312
    Abstract: The present invention relates to the bleaching of fabrics with liquid compositions comprising a peroxygen bleach and a solvent system comprising a hydrophilic solvent and a hydrophobic solvent. These compositions deliver improved stain removal on a variety of stains including bleachable stains, greasy stains, enzymatic stains and mud/clay stains.
    Type: Grant
    Filed: March 13, 1999
    Date of Patent: July 11, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Valentina Masotti, Luca Sarcinelli, Stefano Scialla