Patents Assigned to Lever Brothers Company
  • Patent number: 6085380
    Abstract: A washing system using a washing implement including looped filaments, together with a surfactant-based cleanser.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: July 11, 2000
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Frank Gonda, Edward John Giblin, Christopher John Brooks, James Troy Collins
  • Patent number: 6083517
    Abstract: An antibacterial cleaning composition comprising about 0.05 to about 1 wt. % of a cationic polymer having a charge density of 0.0025 or higher, about 0.2 to about 10 wt. % of an alkylpolyglucoside having a formula: R--O(-G).sub.n wherein R is an alkyl group having from about 8 to about 22 carbon atoms, G is a saccharide residue having 5 or 6 carbon atoms and n is a number from 1-10, about 0.2 to about 5% of a zwitterionic surfactant and about 0.2 to about 5 wt. % of a biquanide compound, the composition having a pH of 7.5 or greater.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: July 4, 2000
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: Kavssery Ananthapadmanabhan, Kam Chan, Dale Grinstead, Carol Vincent
  • Patent number: 6082588
    Abstract: A dual interlocked chamber dispenser having pumps for each chamber. An adapter which connects the chambers to the pump shell is snap fit to the chambers. The chambers may be of various desirable ergonomic shapes.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: July 4, 2000
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: Kevin Joseph Markey, Mark Douglas Gerhart, Gregory Alan Lathrop
  • Patent number: 6080573
    Abstract: There is provided an enzymatic oxidation process wherein a substance which is to be oxidised is reacted with (a) an enzyme exhibiting peroxidase activity and a source of hydrogen peroxide or an enzyme exhibiting oxidase activity on phenolic compounds and (b) a compound which enhances the oxidation activity of the enzyme, characterized in that the compound specifically binds the substance which is to be oxidized. Furthermore, there is provided an enzymatic stain bleaching or anti dye-transfer composition comprising: (a) an enzyme exhibiting peroxidase activity and a source of hydrogen peroxide or an enzyme exhibiting oxidase activity on phenolic compounds and (b) a compound which enhances the oxidation activity of the enzyme and which is capable of binding selectively to a stain chromophore or textile dye in solution.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: June 27, 2000
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Daniel Convents, Rudolf Willem Pieter van Drunen, Cornelis Theodorus Verrips
  • Patent number: 6077317
    Abstract: Pretreater stain remover composition and method of using it is described. The composition comprises a siloxane based surfactant combined with a cosurfactant. Optionally, an antiredeposition polymer, enzymes and enzyme stabilizing system are added to effectively remove both oil and water based stains from a variety of fabrics.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: June 20, 2000
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Dennis Stephen Murphy
  • Patent number: 6077820
    Abstract: A process for producing a detergent powder or a composition therefore involving partial granulation in a high or low shear granulator followed by granulation in a very low shear mixer, for example a fluid bed is disclosed. The process allows powders to be produced over a wide range of bulk densities without the use of a spray-drying step.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: June 20, 2000
    Assignee: Lever Brothers Company Division of Conopco, Inc.
    Inventors: Vinodkumar Ramniranjan Dhanuka, Fakhruddin Esmail Pacha
  • Patent number: 6075003
    Abstract: A fabric laundry treatment composition comprising:a) a fluorocarbon polymer or a fluorocarbon copolymer or mixtures thereof;b) a deposition aid comprising a cationic softening compound or a polymeric delivery aid or mixtures thereof;with the proviso that when the deposition aid is solely a cationic fabric softening compounds the ratio of b):a) is greater than or equal to 2:3.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: June 13, 2000
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: Ziya Haq, Stuart Peter Holt, Adelle Louise Killey, Carlos Petri, Christopher Whaley
  • Patent number: 6074998
    Abstract: The present invention relates to solid detergent compositions generally comprising anionic/amphoteric/nonionic surfactant systems. Addition of specific polyol esters wherein the melting temperature and HLB are specifically defined has been found to remarkably enhance the oil/humectant structuring and releasing capabilities of a skin cleansing bar. In a second embodiment, the invention relates to a method for enhancing the bar's capability of including high levels of oil and/or humectant by carefully balancing the polyol ester's weight ratio to the oil and/or humectant. In the third embodiment, the invention relates to a method of enhancing the bar's capability of incorporating high levels of oil and/or humectant and delivering the oil and/or humectant for skin benefit by carefully balancing the polyol ester's weight ratio to the other costructurants such as PEG 8000 and fatty acid.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: June 13, 2000
    Assignee: Lever Brothers Company
    Inventors: Mengtao He, Michael Barratt, James Dalton, Michael Fair, Michael Petko, John Sheehan, Abid Khan-Lodhi
  • Patent number: 6071866
    Abstract: Liquid skin cleansing compositions comprising (1) mild surfactant systems; (2) 0.5% to 9% by wt. of a hydroxy carboxylic compound or compounds which buffer the pH of the composition; (3) an antibacterial agent and (4) 1% to 99% water to potentiate the bactericidal activity are provided.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: June 6, 2000
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Mitsuko Fujiwara, Carol Kregler Vincent, Kavssery Ananthapadmanabhan, Virgilio Villa
  • Patent number: 6069124
    Abstract: A detergent composition having a bulk density of at least 550 kg/m.sup.3 comprises a mixture of:(a) a granulate, preferably a mechanically mixed granulate, of bulk density 450 kg/m.sup.3 to 1300 kg/m.sup.3, comprising surfactant and inorganic material, and(b) a spray-dried adjunct comprising inorganic material, preferably sodium sesquicarbonate or Burkeite,component (a) being present in an amount of from 35% to 85% by weight of the total granular product.The adjunct allows the bulk density of the final composition to be adjusted to any chosen value without detriment to other properties, thus providing flexibility to formulate at a range of bulk densities.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: May 30, 2000
    Assignee: Lever Brothers Company Division of Conopco, Inc.
    Inventors: Peter Willem Appel, Marcel van der Kraan
  • Patent number: 6066613
    Abstract: The invention relates to hydrogel dispersions/particles capable of trapping water insoluble beneficial agent, yet capable of disintegrating smoothly to impart desirable in use characteristics.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: May 23, 2000
    Assignee: Lever Brothers Company
    Inventors: Liang Sheng Tsaur, Shiji Shen, Margaret Jobling, Michael Paul Aronson
  • Patent number: 6065586
    Abstract: A spacing device for spreading stamped material, especially soap bars, during transfer from a stamping process to a packaging process comprises a train of at least a first and last coupled carriages mounted for movement along an axis and coupled together to allow spacing therebetween upon movement of one of the carriages. A single driving mechanism is provided to move the first carriage along the axis. An actuating mechanism, such as a rack and pinion or a crank lever, is operably connected to the first carriage such that when the driving mechanism moves the first carriage along the axis, the actuating mechanism moves the last carriage along the axis in a direction opposite to the direction of movement of the first carriage, thereby spacing the train of carriages apart.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: May 23, 2000
    Assignee: Lever Brothers Company, A Division of Conopco, Inc.
    Inventors: Daniel John Heinz, Oliver Klein, Mario Peter Neuhof, Hans Juergen Solert, Kevin John Stamp
  • Patent number: 6059844
    Abstract: A process is disclosed for bleaching of a substrate which includes adding a molecular oxygen activating system to an aqueous wash liquor and bleaching the substrate with the molecular oxygen activating system in the aqueous wash liquor. Significant substrate cleaning results can be obtained by molecular oxygen obtained from air even in the absence of any usually applied active oxygen ingredients such as perborate or percarbonate.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: May 9, 2000
    Assignee: Lever Brothers Company
    Inventor: Jean Hypolites Koek
  • Patent number: 6056905
    Abstract: A process of forming a granular detergent products, is effected in a gas fluidisation granulator. A fluidised particulate solid material is contacted with a spray of liquid binder. The excess velocity (U.sub.e) of fluidisation gas relative to the mass or volume flux of the spray (q.sub.mliq or q.sub.vliq) when determined at the normalised nozzle-to-bed distance (D.sub.0) is set so that the flux number (FN.sub.m or FN.sub.v) as determined by ##EQU1## (where .rho..sub.p is the particle density) is at a critical value of at least 2 for at least 30% of the process.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: May 2, 2000
    Assignee: Lever Brothers Company Division of Conopco, Inc.
    Inventors: Johannes Hendrikus Akkermans, Michael Frederick Edwards, Andreas Theodorus Groot, Cornelis Paulus Montanus, Roland Wilhelmus Pomeren, Korkut Ahmet Yuregir
  • Patent number: 6051545
    Abstract: Cleaning compositions in the form of tablets containing surfactant and detergency builder, especially for use in fabric washing, also contain a water-insoluble, water-swellable polymeric material which has an average particle dimension of at least 400 micrometers. Such material may be cellulosic in nature and promotes disintegration of the tablets in water at the time of use.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: April 18, 2000
    Assignee: Lever Brothers Company Division of Conopco, Inc.
    Inventor: Jelles Vincent Boskamp
  • Patent number: 6048829
    Abstract: A bar of soap having, wrapped laterally of the bar, around at least a longitudinal extent of the bar, a stiffening member comprising a stiff sheet material having at least respective outer surfaces thereof each provided by a plastics material.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: April 11, 2000
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: Ronald John Milio, John Duncan Wagner
  • Patent number: 6042288
    Abstract: The invention relates to a cleansing system comprising a synthetic detergent bar and a pouf/sponge for holding the bar. By inserting bar inside the pouf, it has been found that lather can be enhanced, even in compositions comprising lather depressing emollients. The bar holder and bar system also help decrease perception of mush.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: March 28, 2000
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Gail Beth Rattinger, Peter Boettcher, Laurie Ann Coyle, William Narath
  • Patent number: 6042744
    Abstract: The invention provides a bleaching composition of pH 8-14 which comprises an oxygen transfer agent and hypochlorite or a source thereof and a method for bleaching a stained substrate which comprises the step of treating the substrate with a bleaching composition of pH 8-14 which bleaching composition comprises an oxygen transfer agent and hypochlorite or a source thereof. Particularly preferred oxygen transfer agents are imine quaternary ammonium salts such as N-methyl-3,4-dihydroisoquinolinium salts. Where these salts are used, suitable counter-ions include halides, sulphate, methosulphate, sulphonate, p-toluene sulphonate and phosphate. Oxygen transfer agents which comprise a quaternary nitrogen atom are preferred. In the alternative, the oxygen transfer agent can be a sulphonimine.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: March 28, 2000
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: Jayne Elisabeth Nation, Katherine Mary Thompson, David William Thornthwaite
  • Patent number: D423362
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: April 25, 2000
    Assignee: Lever Brothers Company
    Inventors: Carmelo Di Bartolo, Marco Valente, Monica Ferrigno, Giorgio Zecchi, Claudia Moglia
  • Patent number: D425430
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: May 23, 2000
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Mark Douglas Gerhart, Harry Hamilton Haubert, Zebulon Stevens Robbins, III