Patents Assigned to Lever Brothers Co.
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Patent number: 6303558Abstract: A particulate detergent composition or component of high bulk density (at least 600 g/l), comprising at least 10% by weight of detergent surfactant and from 10 to 70% by weight of detergency builder, is composed of at least two, and preferably at least three, different granular components: (i) granules comprising at least 60% by weight of anionic surfactant, (ii) granules comprising at least 20% by weight of nonionic surfactant, and less than 10% by weight of aluminosilicate. (iii)optionally, granules comprising detergency builder.Type: GrantFiled: May 26, 1998Date of Patent: October 16, 2001Assignee: Lever Brothers Co., division of ConopcoInventors: William Derek Emery, Pauline Farnworth, Georgina Hawkes, Terry Instone, Seeng Djiang Liem, John Lloyd, Gilbert Martin Verschelling
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Patent number: 6242397Abstract: 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: GrantFiled: March 22, 2000Date of Patent: June 5, 2001Assignee: Lever Brothers Co., division of Conopco, Inc.Inventors: Ronald John Milio, John Duncan Wagner
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Patent number: 5238594Abstract: A bleaching particulate detergent composition comprises one or more detergent-active compounds, one or more detergency builders including a specific alkali metal aluminosilicate, maximum aluminum zeolite P (zeolite MAP), and a bleach system comprising sodium percarbonate. Zeolite MAP has a beneficial effect on sodium percarbonate stability.Type: GrantFiled: June 24, 1992Date of Patent: August 24, 1993Assignee: Lever Brothers Co., Division of Conopco, Inc.Inventor: Andrew P. Chapple
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Patent number: 5045225Abstract: An antifoam composition and laundry detergent formulation including it. The antifoam composition comprises a selected alkylaminosilicone, finely divided filler particles and a hydrocarbon carrier oil. Optional ingredients include oil/water surfactants and silicone oils. The alkylaminosilicone reduces the surface tension of the hydrocarbon oil and renders the formulation self-hydrophobing.Type: GrantFiled: December 18, 1989Date of Patent: September 3, 1991Assignee: Lever Brothers Co., division of Conopco Inc.Inventors: Michael P. Aronson, Samuel O. Lin, George A. Policello
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Patent number: 4954292Abstract: A detergent composition contains(i) an anionic detergent active material;(ii) polyvinyl pyrrolidone; and(iii) a nonionic material or a mixture of nonionic materials, the nonionic material or its mixture having an HLB of not more than 10.5The polyvinyl pyrrolidone and the nonionic material are present to reduce redeposition of suspended soil onto fabrics washed with this composition.Type: GrantFiled: September 14, 1987Date of Patent: September 4, 1990Assignee: Lever Brothers Co.Inventors: Michael Hull, Reginald V. Scowen
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Patent number: 4935226Abstract: The invention relates to a fluoride toothpaste through the use of which there is produced a sustained and enhanced level of fluoride in the oral fluids. The toothpaste comprises a calcium-free abrasive cleaning agent, an inorganic ionic fluoride, 0.01 to 0.6% by weight of a flavoring agent and 0.002 to 0.1% by weight of sodium saccharinate or the equivalent weight of another sweetening agent.Type: GrantFiled: August 18, 1988Date of Patent: June 19, 1990Assignee: Lever Brothers Co.Inventor: Ralph M. Duckworth
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Patent number: 4220264Abstract: A hand operated pump dispenser adapted to be fitted to a fluid container to dispense the fluid as a spray has a discharge reservoir in the form of a bellows having an inlet closed by a one way valve allowing fluid into the bellows and a finger operated discharge valve, the bellows being charged and discharged by movement of the inlet relative to the housing, the charging movement of the bellows inlet also energizing an energy storage spring and being effected either by rotation or downward pressure on a first actuating member.Type: GrantFiled: September 27, 1978Date of Patent: September 2, 1980Assignee: Lever Brothers Co.Inventor: Rustom K. Gamadia
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Patent number: 4193752Abstract: A liquid component can be introduced into a detergent bar by injecting liquid within or immediately downstream of a multi-apertured plate positioned before the compression cone of an extruder. The method can be used to produce marbled bars with the aid of a colored liquid and is described in UK Pat. No. 1387567.When a double extruder is used together with a common expression cone the injected liquid becomes unevenly distributed within the detergent. Even distribution of the liquid as striations is achieved by use of a partition in the cone to ensure each detergent stream is subjected to separate compression during movement down the cone.Type: GrantFiled: August 22, 1978Date of Patent: March 18, 1980Assignee: Lever Brothers Co.Inventors: Leslie Hunt, Ian T. Nicolson, Thomas M. Whitfield
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Patent number: 4058487Abstract: A non-mushing high lathering synthetic toilet bar comprising, based on the total weight of the actives, 40-85% of C.sub.12 alkane sulfonate, 5-35% of a C.sub.12 natural or synthetic fatty acid, and 5-30% of an additive selected from the group consisting of hydroxyalkane sulfonates, alkylmethyl taurides, hydroxyalkylmethyl taurides, alkyl phosphates, mono-alkyl succinates and maleates, alkane disulfonates, acyl isethionates, alkyl sulfates and alkene sulfonates.Type: GrantFiled: June 14, 1976Date of Patent: November 15, 1977Assignee: Lever Brothers Co.Inventor: Leon M. Prince
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Patent number: D277543Type: GrantFiled: June 3, 1982Date of Patent: February 12, 1985Assignee: Lever Brothers Co.Inventor: Serge Mansau
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Patent number: D325167Type: GrantFiled: August 25, 1989Date of Patent: April 7, 1992Assignee: Lever Brothers Co., Division of Conopco, Inc.Inventor: Brian G. Humfress