Patents by Inventor Christiaan A. J. K. Thoen

Christiaan A. J. K. Thoen 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: 5935922
    Abstract: Detergent compositions comprise a surfactant selected from anionic, nonionic, cationic, amphoteric and zwitterionic detergent-active compounds and mixtures thereof; a detergency builder comprising zeolite P having a silicon to aluminium ratio not greater than 1.33; from 0.05% to 0.3%, by weight of the composition, anionic N-bonded stilbene optical brightener; and one or more additional components selected from manganese phthalocyaninetetrasulphonate and polymers selected from polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole, polyvinylpyrrolidones, polyvinyloxazolidones, polyvinylimidazoles and mixtures thereof.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: August 10, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Michael Alan J. Moss, Christiaan A. J. K. Thoen
  • Patent number: 5597790
    Abstract: Liquid detergent compositions are disclosed, which contain a solid peroxygen compound suspended in a liquid phase containing water and at least one water-miscible solvent, and low levels of silicate which provide adequate suspension for the solid peroxygen compound in the liquid phase.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: January 28, 1997
    Assignee: The Procter & Gamble Company
    Inventor: Christiaan A. J. K. Thoen
  • Patent number: 5582762
    Abstract: Aqueous liquid detergent compositions are described which comprise a proteolytic enzyme wherein the proteolytic activity is reversibly inhibited by a peptide trifluoromethyl ketone.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: December 10, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Regine Labeque, John M. McIver, Christiaan A. J. K. Thoen
  • Patent number: 5580486
    Abstract: Aqueous liquid detergent compositions are described which comprise a proteolytic enzyme wherein the proteolytic activity is reversibly inhibited by an .alpha.-amino boronic acid.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: December 3, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Regine Labeque, Pierre M. A. Lenoir, Rajan K. Panandiker, Christiaan A. J. K. Thoen
  • Patent number: 5576283
    Abstract: Aqueous liquid detergent compositions are described which comprise a proteolytic enzyme wherein the proteolytic activity is reversibly inhibited by a peptide aldehyde.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: November 19, 1996
    Assignee: The Procter & Gamble Company
    Inventors: James P. Johnston, Regine Labeque, Pierre M. A. Lenoir, Christiaan A. J. K. Thoen, John M. McIver
  • Patent number: 5560858
    Abstract: A) A metallocatalyst selected from: a) metalloporphin and water-soluble or water-dispersable derivatives thereof; b) metaloporphyrin and water-soluble or water-dispersable derivatives thereof; c) metallophthalocyanine and water-soluble or water-dispersable derivatives thereof; B) a polyamine N-oxide containing polymers; C) an efficient amount of a bleaching agent.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: October 1, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Abdennaceur Fredj, Frederick E. Hardy, Alan D. Willey, James P. Johnston, Regine Labeque, Christiaan A. J. K. Thoen
  • Patent number: 5474576
    Abstract: A dye transfer inhibiting compositions are disclosed, comprising:A. an metallo catalyst selected froma) metallo porphin and water-soluble or water-dispersable derivatives thereof;b) metallo porphyrin and water-soluble or water-dispersable derivatives thereof;c) metallo phthalocyanine and water-soluble or water-dispersable derivatives thereof;B. an amine base catalyst stabilizer capable of binding to the 5th ligand of the metallo catalyst.C. an enzymatic system capable of generating hydrogen peroxide.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: December 12, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Christiaan A. J. K. Thoen, Adbennaceur Fredj, Regine Labeque
  • Patent number: 5472628
    Abstract: Included is a liquid detergent composition comprising detersive surfactant, proteolytic enzyme, a detergent-compatible second enzyme, and an aryl boronic acid of the structure: ##STR1## where X is selected from C.sub.1 -C.sub.6 alkyl, substituted C.sub.1 -C.sub.6 alkyl, aryl, substituted aryl, hydroxyl, hydroxyl derivative, amine, C.sub.1 -C.sub.6 alkylated amine, amine derivative, halogen, nitro, thiol, thiol derivative, aldehyde, acid, acid salt, ester, sulfonate or phosphonate; each Y is independently selected from hydrogen, C.sub.1 -C.sub.6 alkyl, substituted C.sub.1 -C.sub.6 alkyl, aryl, substituted aryl, hydroxyl, hydroxyl derivative, halogen, amine, alkylated amine, amine derivative, nitro, thiol, thiol derivative, aldehyde, acid, ester, sulfonate or phosphonate; and n is 0 to 4.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: December 5, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Rajan K. Panandiker, Christiaan A. J. K. Thoen, Pierre M. A. Lenoir, Dwight M. Peterson, James E. Thompson
  • Patent number: 5445651
    Abstract: Dye transfer inhibiting compositions are disclosed, comprising: (A) a metallo catalyst selected from (a) metallo porphin and water-soluble or water-dispersible derivatives thereof; (b) metallo porphyrin and water-soluble or water-dispersible derviatives thereof; (c) metallo phthalocyanine and water-soluble or water-dispersible derivatives thereof; (B) an enzyme oxidation scavenger, (C) an enzymatic system capable of generating hydrogen peroxide, and (D) an enzyme, preferably selected from protease, lipase, amylase, and cellulase. The enzyme oxidation scavenger (B) operates to stabilize and protect the enzymes (D) from loss of activity in the wash.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: August 29, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Christiaan A. J. K. Thoen, Adbennaceur Fredj, James P. Johnston
  • Patent number: 5422030
    Abstract: Included are liquid detergent compositions comprising anionic and/or nonionic surfactant, proteolytic enzyme, second enzyme, and an aromatic borate ester.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: June 6, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Rajan K. Panandiker, Christiaan A. J. K. Thoen, Pierre M. A. Lenoir
  • Patent number: 5275753
    Abstract: Stabilization systems for high pH, aqueous liquid detergent compositions containing detergent enzyme and peroxygen bleaches are disclosed.The detergent compositions contain magnesium salts as an enzyme stabilizing system.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: January 4, 1994
    Assignee: The Procter & Gamble Company
    Inventors: Francesco de Buzzaccarini, Christiaan A. J. K. Thoen, Jean-Pol Boutique