Patents by Inventor George K. Rennie

George K. Rennie 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: 5368843
    Abstract: A liquid system includes a liquid medium and a thickening mixture, the thickening mixture being dispersed in the liquid medium and comprising a synergistic mixture of a gum-type polymer and an acrylic-type polymer. The thickening system is applicable to a wide variety of systems, including detergent and cleaning compositions.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: November 29, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: George K. Rennie
  • Patent number: 5286405
    Abstract: A liquid composition includes an aqueous medium containing surfactant and a thickening mixture with particulate abrasive dispersed in the thickened mixture The thickening mixture comprises a synergistic mixture of a linear polymer and a branded starch polymer. The composition may be a household cleaner or a toothpaste.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: February 15, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: George K. Rennie, Neil P. Randle
  • Patent number: 4787998
    Abstract: The invention pertains to fragrant aqueous liquid detergent compositions. By the inclusion therein of shear thinning polymers, having viscosities within defined ranges, improved products are obtained which, when compared with fragrant compositions with other polymers, show an improved longevity of the fragrance, even at a reduced perfume level.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: November 29, 1988
    Assignee: Lever Brothers Company
    Inventors: George K. Rennie, Paul D. Hardman
  • Patent number: 4624890
    Abstract: A wiping cloth or similar article especially suitable for wiping glossy hard surfaces to give a streak-free result comprises a flexible absorbent substrate of fibrous material, having a base weight of at least 50 g/m.sup.2 and a thickness of at least 0.5 mm, advantageously consisting at least partially of natural cellulosic fibres, treated with a cationic polyacrylamide to enhance its soil capture capability, and carrying a fully formulated liquid cleaning composition.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: November 25, 1986
    Assignee: Lever Brothers Company
    Inventors: John Lloyd, George K. Rennie
  • Patent number: 4600620
    Abstract: A wiping cloth or the like, suitable for wiping glossy hard surfaces, comprises a sheet substrate carrying a liquid, for example, a streak-free cleaning composition. At least one external (wiping) surface of the substrate has flattened areas including thermoplastic material coalesced by the application of heat and pressure and open areas, and this external surface is immediately adjacent to a core of bulky high-porosity fibrous sheet material.
    Type: Grant
    Filed: August 11, 1983
    Date of Patent: July 15, 1986
    Assignee: Lever Brothers Company
    Inventors: John Lloyd, George K. Rennie
  • Patent number: 4579677
    Abstract: A deodorant product comprises a deodorant composition and a bleaching agent, the deodorant composition having a deodorant value of from 0.50 to 3.5 as measured by the Deodorant Value Test.
    Type: Grant
    Filed: February 12, 1982
    Date of Patent: April 1, 1986
    Assignee: Lever Brothers Company
    Inventors: David C. Hooper, George A. Johnson, Donald Peter, George K. Rennie
  • Patent number: 4567675
    Abstract: A device for conditioning fabrics in the tumble-dryer comprises a powdered conditioning agent inside a permeable container, for example a sachet of paper, nonwoven fabric or plastics film, which in turn is inside an outer, substantially form-retaining, apertured container. The outer container is of a shape, for example, spherical, which allows ready movement among the tumbled fabrics. As it moves, the article gives more uniform and efficient conditioning than articles in the form of a sheet substrate impregnated with a solid conditioning agent.
    Type: Grant
    Filed: May 12, 1983
    Date of Patent: February 4, 1986
    Assignee: Lever Brothers Company
    Inventor: George K. Rennie
  • Patent number: 4532719
    Abstract: A method for conditioning fabrics in the tumble-dryer comprises applying to the fabrics a fabric conditioner in fine free-flowing powder form and containing a substantial proportion of a water-soluble soap blend containing significant proportions of C.sub.12, C.sub.14, C.sub.16 and C.sub.18 soaps, preferably a blend of 45-85% tallow soap and 15-55% coconut soap. The powder is advantageously applied from a sprinkling device that moves freely among the fabrics.
    Type: Grant
    Filed: March 7, 1984
    Date of Patent: August 6, 1985
    Assignee: Lever Brothers Company
    Inventors: James F. Davies, Arthur G. Leigh, George K. Rennie
  • Patent number: 4469848
    Abstract: A deodorant product comprises a deodorant composition and a polishing agent, chosen from waxes, film-forming polymers or mixtures thereof, the deodorant composition having a deodorant value of from 0.50 to 3.5 as measured by the Deodorant Value Test.
    Type: Grant
    Filed: February 12, 1982
    Date of Patent: September 4, 1984
    Assignee: Lever Brothers Company
    Inventors: David C. Hooper, George A. Johnson, Donald Peter, George K. Rennie
  • Patent number: 4347153
    Abstract: A deodorant product comprises a deodorant composition and a carrier for the composition chosen from abrasive cleaners, bleaching agents, waxes, film-forming polymers or mixtures thereof, the deodorant composition having a deodorant value of from 0.50 to 3.5 as measured by the Deodorant Value Test.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: August 31, 1982
    Assignee: Lever Brothers Company
    Inventors: David C. Hooper, George A. Johnson, Donald Peter, George K. Rennie
  • Patent number: 4170681
    Abstract: A method of applying a protective varnish layer on a hydrophilic surface carrying at least one area of hydrophobic ink, and the resultant product. The method comprises: applying to at least the inked portions of the surface a layer of an aqueous dispersion containing 5% to about 60% by weight of a film forming polymer or copolymer and 0.5% to about 10% of an auxiliary film forming material capable of raising the critical surface tension of the hydrophobic inked area; and allowing the applied layer to dry.
    Type: Grant
    Filed: January 20, 1978
    Date of Patent: October 9, 1979
    Assignee: Lever Brothers Company
    Inventors: John R. Edwards, George K. Rennie, David A. Rosser, Colin Smart