Patents Assigned to Lever Brothers Company, a division of Conopco, Inc.
  • Heavy duty liquid detergent composition comprising cellulase stabilization system
    Patent number: 5703032
    Abstract: The present invention relates to a specific ternary enzyme stabilization system which unexpectedly enhances stability of a specific cellulase enzyme in isotropic liquid detergent compositions.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: December 30, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Myongsuk Bae-Lee, Nancy Falk, Tirucherai Varahan Vasudevan
  • Fabric softening composition
    Patent number: 5700387
    Abstract: Patent application that covers the concept of a conditioner sheet coated with a solubilised rinse conditioners comprising a fabric softening compound and a solubilising agent. The dryer sheets softens at low temperatures and is non-staining. The invention works particularly well with HEQ.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: December 23, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Ziya Haq, Abid Nadim Khan-Lodhi, Philip John Sams
  • Compositions comprising high loading water-dispersible UVA and/or UVB light-absorbing copolymer
    Patent number: 5698183
    Abstract: The invention is concerned with compositions comprising novel water-dispersible copolymers which contain at least one UVA light-absorbing monomer, one UVB light-absorbing monomer, one hydrophilic monomer, and optionally one hydrophobic monomer component. The UVA light-absorbing monomer absorbs at .lambda.max ultraviolet light in the 320-400 nm range. The UVB light-absorbing monomer absorbs at .lambda.max ultraviolet light in the 290-320 nm range. Because of the R.sub.3 group used in the invention, the copolymers used in the compositions of the invention permit higher loading of UV monomers than previously obtainable.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: December 16, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Matthew Evan Langer, John Frederick Hessel, Ferial Khorshahi, Dennis Brian Sinfield
  • Pourable abrasive aqueous detergent composition for cleaning hard surfaces
    Patent number: 5698509
    Abstract: A pourable, homogenous, abrasive aqueous detergent composition, suitable for cleaning hard surfaces contains detergent active compound which is preferably a mixture of anionic and nonionic detergent active compounds, and a water-soluble salt in an amount sufficient to provide undissolved particles which act as an abrasive. The composition has an apparent viscosity which is sufficient to maintain the particles of salt in suspension during storage while ensuring that the composition remains pourable.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: December 16, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Yvon Jacques Nedonchelle
  • Automatic dishwashing compositions containing aluminum salts
    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
  • Process for the preparation of 2,2'-oxydisuccinate
    Patent number: 5696288
    Abstract: A process for the preparation of 2,2'-oxydisuccinate from undissolved solid, powdered or comminuted maleate and malate species added to a slurry of alkaline earth metal hydroxide is disclosed which cooperatively controls pH, temperature, time and ratio of reactants to effectively avoid substantial phase separation.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: December 9, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Eddie Nelson Gutierrez, Donna Wu, Shang-Ren Wu
  • Anti-form system based on hydrocarbon polymers and hydrophobic particulate solids
    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
  • Sulfanimines as bleach catalysts
    Patent number: 5693603
    Abstract: Novel bleaches, a method for bleaching substrates using these materials and detergent compositions containing same are reported. The bleaches are sulfanimines. Substrates such as fabrics may be bleached in an aqueous solution containing the sulfanimine and a peroxygen compound.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: December 2, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Naresh Dhirajlal Ghatlia
  • Ethylene dicysteate sequestrants and methods for preparation
    Patent number: 5693854
    Abstract: Novel compounds useful as sequestrants as well as builders for detergent compositions and methods for their preparation are disclosed.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: December 2, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Eddie Nelson Gutierrez, Shang-Ren Wu, Robert Vermeer
  • Ethyene containing cysteate sequestrants and methods of manufacture
    Patent number: 5688996
    Abstract: Novel compounds useful as sequestrants as well as builders for detergent compositions and methods for their preparation are disclosed.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: November 18, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Eddie Nelson Gutierrez, Shang-Ren Wu, Robert Charles Vermeer
  • Aqueous personal care cleanser comprising specific lipid composition
    Patent number: 5688752
    Abstract: A personal care composition in the form of an aqueous liquid comprises:i) a lipid composition comprising three components A, B and C,where A is a molecule having at least two hydrocarbon chains and a polar head group for which ##EQU1## B is a molecule having one long chain and a polar head group; and C comprises a compound capable of assisting the formation of lipid bilayers and stabilizing any lipid bilayers formed in the lipid composition; and the molar ratio of A:B:C is 1.0:1.5 to 6.0:1.1 to 8.0;ii) a surface active agent selected from anionic, nonionic, cationic, zwitterionic, amphoteric surface active agents, soap and mixtures thereof; andiii) a deposition aid.The composition may in the form of for example a shower gel or facial cleanser which is temporarily applied to the skin before being removed such as wiping or rinsing it from the skin.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: November 18, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Graham Andrew Turner
  • Sulfated polyhydroxy compounds as anionic surfactants and a process for their manufacture
    Patent number: 5686603
    Abstract: The present invention relates to sulfated polyhydroxy compounds used as anionic surfactants and to processes for their manufacture.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: November 11, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Van Au, Robert Vermeer, Bijan Harichian
  • Detergent compositions containing ethylene dicysteate (EDC) sequestrants
    Patent number: 5686402
    Abstract: Laundry detergent compositions containing a detergent surfactant, a detergent builder, and from about 0.1% to about 50% by weight ethylene dicysteate or its acid form are disclosed. These compositions provide enhanced removal of organic stains, such as food and beverage stains particularly polyphenolic stains such as wine, blueberry, tea, coffee, morello juice and the like.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: November 11, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Eddie Nelson Gutierrez, Shang-Ren Wu, Robert Vermeer
  • Dry cleaning system using densified carbon dioxide and a surfactant adjunct
    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
  • Mild bar compositions comprising blends of higher melting point polyalkylene glycol(s) and lower melting point polyalkylene glycol(s) as processing aids
    Patent number: 5683973
    Abstract: The present invention relates to bar compositions comprising a mixture of higher melting point and lower molecular weight (100 to about 1400) lower melting point polyalkylene glycol(s) in which use of the lower molecular weight polyalkylene glycol or glycols allows enhanced rates of extrusion from the plodder.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: November 4, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Albert Joseph Post, Frederick Silvio Osmer, Michael Francis Petko
  • Method of dry cleaning fabrics using densified liquid carbon dioxide
    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
  • Mild antimicrobial liquid cleansing formulations comprising buffering compound or compounds as potentiator of antimicrobial effectiveness
    Patent number: 5681802
    Abstract: A liquid skin cleansing composition comprises (1) mild surfactant systems; (2) 0.1 to 10% by wt. of a compound or compounds which buffer the pH of the composition; and (3) 1% to 99% water to potentiate the bactericidal activity. In a second embodiment of the invention, the buffering compound or compounds potentiates antibacterial effect in compositions already containing an antibacterial agent.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: October 28, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Mitsuko Fujiwara, Carol Vincent, Kavssery Ananthapadmanabhan, Virgilio Villa
  • Method of dry cleaning fabrics using densified carbon dioxide
    Patent number: 5676705
    Abstract: A method of dry cleaning fabrics using a dry cleaning system is described. The system comprises 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: October 14, 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
  • Aqueous liquid compositions comprising peracid compounds and defined N-oxide compounds
    Patent number: 5674828
    Abstract: The present invention relates to liquid detergent compositions comprising:(1) 1-80% by wt. surfactant;(2) defined peroxyacid; and(3) 0.01-20% by wt. of N-oxide compound.The N-oxide compounds help to extend the half life of the peracid bleaches in such compositions. The invention further relates to a method of incorporating stability of surfactant compositions comprising peracid bleaches which method comprises adding 0.01-2.0% by wt. of said N-oxide compound to the composition.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: October 7, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Charles Nathaniel Knowlton, Janet Coope, Daniel Kuzmenka, Mark Stephen Naser, Leslie Jo Morgan
  • Amido peroxycarboxylic acids for bleaching
    Patent number: 5672295
    Abstract: An amido peroxyacid is provided having the formula: ##STR1## wherein: R is selected from the group consisting of C.sub.1 -C.sub.16 alkylene, C.sub.5 -C.sub.12 cycloalkylene and C.sub.6 -C.sub.12 arylene radicals;R.sup.1 and R.sup.2 are selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.5 -C.sub.12 cycloalkyl and C.sub.6 -C.sub.12 aryl radicals;R.sup.3 is selected from the group consisting of C.sub.1 -C.sub.16 alkylene, C.sub.5 -C.sub.12 cycloalkylene and C.sub.6 -C.sub.12 arylene radicals;n and m are integers whose sum is 1; andM is selected from the group consisting of hydrogen, alkali metal, alkaline earth metal, ammonium and C.sub.1 -C.sub.10 alkanolammonium cations and radicals.The amido peroxyacid is useful for bleaching substrates such as stained laundry, dishware and household hard surfaces. A method and bleaching composition that includes a surfactant is also described.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: September 30, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Richard Gerald Gary, John Richard Nicholson, John Oakes, Jean Pekaar Wiley