Patents Represented by Attorney, Agent or Law Firm A. Kate Huffman
  • Patent number: 5783539
    Abstract: A composition and method for inhibiting lead corrosion of fine tableware washed in automatic dishwashers is disclosed. The detergent composition comprises an aluminum-sequestrant complex formed by binding the aluminum by a sequestrant in a premix, which is then processed with other detergent components. The composition has a pH of less than about 10 and is substantially free of silicates.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: July 21, 1998
    Assignee: Lever Brothers Company
    Inventors: Petrus Andrianus Angevaare, Richard Gerald Gary
  • Patent number: 5759977
    Abstract: A solid detergent composition suitable for use in an industrial warewashing process and in the form of a block of compressed granular material is provided, said block having a weight of 0.2-10 kg and comprising:25-35% by weight of an alkalimetal metasilicate selected from sodium- and potassium metasilicate;40-55% by weight of a phosphate builder;2-4% by weight of a compressing aid selected from low foaming nonionic surfactants, metal soaps, paraffins, talcum powder, polyethylene glycol, sodium benzoate, mixtures of long chain ketones having more than 25 carbon atoms and fatty alcohols, and mixtures thereof; and up to 7.0% by weight of free water. Said block has optimal quality characteristics.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: June 2, 1998
    Assignee: Diversey Lever, Inc.
    Inventors: Guido Clemens van den Brom, Hendrik Johannes Connotte
  • Patent number: 5759501
    Abstract: A container for institutional detergents, preferably tablets, includes a rigid large screened base and a flexible plastic film sidewall heat bonded to the peripheral surface of the base. The container is filled, preferably from its top portion, with tableted detergent and closed with a single heat seal along the top surface of the wall of the container. The screen surface is then closed with a removable, peel-off seal or removable cap. The upper portion of the container will include a handle which makes it easy to transport the container and place it into a dispenser for use. In use, a water nozzle will spray upwards onto the surface of the screen base through the holes in the screen, dissolving detergent and allowing the solution to pass downwardly to a drain, which directs it to a ware washing apparatus.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: June 2, 1998
    Assignee: Diversey Lever, Inc.
    Inventors: James Livingston, Donald Wright, Tiziano J. Bellon, Kenneth James Roach
  • Patent number: 5759976
    Abstract: Tableted detergents are formed from a hydrated phosphate sequestrant, caustic, free water and, optionally, fillers by combining the products and tableting the components without permitting the tablets or detergent to exceed 50.degree. C. In a preferred embodiment where fillers are incorporated, all free water is combined with the phosphate sequestrants, both anhydrous and hydrated. After the water has been absorbed by the sequestrants, the filler and caustic can be added and the detergent tableted. The free water is bound sufficiently tightly to the phosphate sequestrant that it does not rapidly react with the anhydrous caustic, maintaining the temperature at less than 50.degree. C., which in turn prevents the water of hydration in the phosphates from reacting and thereby weakening the formed tablets. The tablets can also be formed by combining the filler with the phosphate sequestrants and water and subsequently adding caustic if the detergent is cooled and its temperature maintained below 50.degree. C.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: June 2, 1998
    Assignee: Diversey Lever, Inc.
    Inventors: Kenneth James Roach, Patricia Anderson
  • Patent number: 5756142
    Abstract: A squeezable spread having a fat phase of less than 3 wt. % of a hardstock combined with about 97 to about 99% of liquid vegetable oil is described. The hardstock is a fully hardened low erucic rapeseed oil and the liquid vegetable oil is non-hydrogenated containing no solid fat at temperatures of 45.degree. F. and above.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: May 26, 1998
    Assignee: Van den Bergh Foods Company, Division of Conopco, Inc.
    Inventors: Freek Reckweg, Michael Chiaverini, Martin Paul Gillis
  • Patent number: 5743311
    Abstract: A foam limiting element for a dispenser for liquids is provided. The element comprises a three-dimensional mesh of a multiplicity of the fibers which are connected together to create a multiplicity of irregular liquid paths through the spaces between the fibers, the element having a three-dimensional configuration to fit within a dispensing head of a dispenser. A dispenser for liquids has a dispenser head with a discharge channel in which a foam limiting element is positioned. The discharge channel has means for retaining the element in place whereby all liquid flows through the element before being dispensed. The discharge channel has a wall structure which precludes introduction of air into the liquid to be dispensed.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: April 28, 1998
    Assignee: Diversey Lever, Inc.
    Inventors: Garry William Crossdale, Michael James Stevens
  • Patent number: 5741765
    Abstract: Improved compositions which clean a surface and are believed to deposit thereupon a layer of cationic surfactant which assists the release of soil subsequently deposited upon the said surface comprising surfactant, wherein said surfactant comprises:a) at least 65% wt on total surfactant of nonionic surfactant,b) less than 1% wt on total surfactant of anionic surfactant, and,c) 0.1-35% wt on total surfactant of a quaternized polydimethylsiloxane, preferably one which comprises a cation of the general formula:?R.sub.1 R.sub.2 R.sub.3 N--Z--?Si(CH.sub.3).sub.2 --O!.sub.n Si(CH.sub.3).sub.2 --Z--NR.sub.4 R.sub.5 R.sub.6 !.sup.2+wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently alkyl or hydrogen, Z is --CH.sub.2 --CHOH--CH.sub.2 O--(CH.sub.2).sub.3 -- and n is 1-200.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: April 21, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Matthew James Leach
  • Patent number: 5741767
    Abstract: A warewashing composition for a machine dishwasher and a method of using it is described. The composition comprises effective amounts of an organic peroxy acid, and an amylase enzyme which, when incubated at 55.degree. C. in a solution of 2 mM sodium citrate, 1 mM epsilon phthalimidoperoxyhexanoic acid in 36 ppm water at pH 8.0, has a half-life of two minutes or greater based on an activity vs. time plot obtained via monitoring color development at 405 nm of solution samples incubated with p-nitrophenyl-.alpha.-D-maltoheptaoside as substrate and gluco amylase and .alpha.-glucosidase as coupled enzymes; and 1% to 75% by weight of a builder. A 1% aqueous solution of the composition must have a pH of less than 10.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: April 21, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: John Richard Nicholson, Isaac Israel Secemski, Deborah Sue Rick, Duane Anthony Raible
  • Patent number: 5736500
    Abstract: Improved microemulsions having a lower level of solvent, a lower level of oil, a more robust formulation and/or exhibiting equivalent if not better performance on fatty soils can be obtained by simultaneous selection of specific surfactants, specific oils and specific solvents. When all three of these components are selected in the manner described herein, a synergistic benefit is attained. The present invention provides a liquid, aqueous cleaning composition in the form of a stable emulsion having a dispersed phase diameter of 10-100 nanometres comprising:a) at least 30 wt % water,b) at least l wt % but not more than 40 wt % of a surfactant system comprising at least one alkoxylated alcohol nonionic surfactant and not more than 10 wt % on alkoxylated alcohol nonionic surfactant of anionic surfactant,c) at least 2 wt % but not more than 20 wt % of a solvent having a solubility of less than 12% w/w in water, and,d) at least 0.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: April 7, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Donald Michael Farnworth, Alexander Martin
  • Patent number: 5731277
    Abstract: A composition and method for inhibiting the extraction of transition metals from tableware washed in automatic dishwashers is described. The composition contains an aluminum species in which substantially all of the aluminum (III) ions are present as aluminum tetrahydroxide. A bleaching agent, a builder and optionally a surfactant and a silicate are present. The composition has a pH of less than about 10. A process for preparing the composition is also described.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: March 24, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Richard Gerald Gary, Petrus Adrianus Johannes Marinus Angevaare, Arnold Oscar Jensen, Leonard Van Gorkom
  • Patent number: 5719112
    Abstract: The invention provides a dishwashing composition comprising builder material, buffer material and other conventional ingredients in combination with a lipase and a hydrophobic modified (co)polymer of acrylic acid. More in particular the invention provides a dishwashing composition comprising lipase (calculated as having an activity of 200 LU/mg) and a hydrophobic modified (co)polymer of acrylic acid in a weight ratio of 1 to 1:2.000, preferably 1 to 1:1 000.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: February 17, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: James William Gordon, Joseph Oreste Carnali
  • Patent number: 5719111
    Abstract: A detergent block of compressed granular material is provided, said block having a weight of 0.2-10 kg, being substantially free of phoshate builder material, and comprising a granulated builder material, an alkaline agent and a compressing aid. A process is also provided for preparing a block of compressed granular material being substantially free of a phosphate builder and having a weight of 0.2 to 10 kg, said process involving the steps of(i) granulating a non-phosphate builder material, with 0.1-10% by weight based on the weight of the builder of a co-ingredient selected from polycarboxylic polymer solutions, alkali metal silicate solutions, and mixtures thereof;and(ii) compressing a particulate mixture of said granulated builder material and other components of the block, including a compressing aid, in a mould under a pressure of 3-30 kN/cm.sup.2.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: February 17, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Guido Clemens van den Brom, Seeng Djiang Liem, Harmannus Tammes
  • Patent number: 5710120
    Abstract: Stable, silicate-free, soft metal safe, alkaline cleaners are provided. The cleaners comprise calcium ions and surfactants containing hydroxyl and/or carboxylic acid groups or a combination thereof, wherein the total of the two functionalities in each surfactant is greater than or equal to 2, and alpha-hydroxy carboxylic acids. It has been surprisingly discovered that alpha-hydroxy carboxylic acids such as tartaric acid, are capable of keeping calcium ions in an alkali solution. The cleaners may also comprise nonionic surfactants to provide wetting, detergency, and foamability where required, anionic surfactants as viscosity enhancers in the case of high retention cleaners, and solvents such as alcohols, glycol ethers, or hydrotropes to enhance solubility of the system. The alkaline cleaners are safe to use on soft metal surfaces and equipment commonly found in many industries, without the presence of silicate which is normally used as a corrosion inhibitor.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: January 20, 1998
    Assignee: Diversey Lever, Inc.
    Inventors: Ratana Kanluen, Henry Scrivens, Angela Brett
  • Patent number: 5705465
    Abstract: An automatic dishwashing detergent composition is described which comprises 0.01 to 1.0% of a fatty acid having from 12 to 22, preferably from 16 to 18, carbon atoms in the acyl radical and are preferably unsaturated; 0.1 to 2% of a carrier containing a ketone which has at least 25 carbon atoms; 0.5 to 40% of a surfactant; 0.1 to 10 weight % of a proteolytic enzyme; 1 to 30 weight % of a bleaching agent selected from the group of a peroxygen or hypohalite agent; and 1 to 75% of a builder providing a composition having a pH of less than about 11. Specifically, the detergent composition must have a weight ratio of long-chain ketone/carrier to fatty acid of 5:1 to 1:1, preferably from 4:1 to 2:1. A method of using the composition is also described.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: January 6, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Petrus Adrianus Angevaare, Alla Tartakovsky
  • Patent number: 5703175
    Abstract: A surfactant-modified polymer and method of making the same. The surfactant-modified polymer has a polycarboxylate backbone with nonionic surfactant chemically associated therewith and is formed by the reaction of a reactant compound selected from the group consisting of carboxylic acids, polycarboxylic acids and mixtures thereof in an aqueous media in the presence of a nonionic surfactant.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 30, 1997
    Assignee: Diversey Lever, Inc.
    Inventors: Donald Borseth, David McCall
  • Patent number: 5698506
    Abstract: A composition and method for inhibiting lead corrosion of fine tableware washed in automatic dishwashers is disclosed. The composition comprises an aluminum salt which dissolves at a rate to deliver less than 0.56 mM aluminum(III) per minute at 42.degree. C. to a wash liquor, a bleaching agent, a builder and optionally a surfactant. The composition has a pH of less than about 10 and is substantially free of silicates.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 16, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Petrus Andrianus Angevaare, Richard Gerald Gary
  • Patent number: 5695575
    Abstract: A method and composition for inhibiting foam formation in automatic dishwashers are described. The composition comprises an anti-foam system having 0.01 to 1% of certain hydrophobic particulate solids combined with 0.01 to 4% of high viscosity hydrocarbon polymers; 1 to 30 wt. % of a bleaching agent; 1 to 40 wt. % of a surfactant; 0.1 to 10 wt. % of an enzyme; and 1 to 75 wt. % of a builder, the composition having a pH of less than about 11.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: December 9, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Petrus Adrianus Angevaare, Olaf Beers, Peter Robert Garrett, Alla Tartakovsky, John William Harold Yorke
  • Patent number: 5683977
    Abstract: A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO.sub.2. The surfactant has a polysiloxane, a branched polyalkylene oxide and a halocarbon group which is a functional CO.sub.2 -philic moiety connected to a CO.sub.2 -phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: November 4, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Sharon Harriott Jureller, Judith Lynne Kerschner, Myongsuk Bae-Lee, Lisa Del Pizzo, Rosemarie Harris, Carol Resch, Cathy Wada
  • Patent number: 5683473
    Abstract: A method of dry cleaning fabrics using a dry cleaning system is described. The system comprises densified carbon dioxide, preferably in a liquid phase, and a selected surfactant which is soluble in the densified CO.sub.2. The surfactant has a polysiloxane, a branched polyalkylene oxide or a halocarbon group which is a functional CO.sub.2 -philic moiety connected to a CO.sub.2 -phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: November 4, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Sharon Harriott Jureller, Judith Lynne Kerschner, Rosemarie Harris
  • Patent number: D393975
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: May 5, 1998
    Assignee: Diversey Lever, Inc.
    Inventors: Gerrit K. Bunschoten, Patrick Van Gendt