Patents Represented by Attorney, Agent or Law Firm Pankaj M. Khosla
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Patent number: 6730645Abstract: A method for improving stability of a dye used in a colored aqueous acidic rinse aid composition to ambient and ultra-violet light radiation is disclosed. The method includes the step of adding a chelant to an acidic rinse aid composition. The chelant is present in an amount of at least 1 ppm by weight of the rinse aid composition.Type: GrantFiled: July 11, 2001Date of Patent: May 4, 2004Assignee: The Procter & Gamble CompanyInventors: Peter Robert Foley, Xiaoqing Song, Lucio Pieroni
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Patent number: 6083895Abstract: A tabletted detergent composition comprises from 45% to 80% by weight of a builder system which is not fully hydrated and from 5% to 30% total water content, wherein the total water content comprises water derived from the builder system, optional ingredients and from added water, wherein the ratio of the total water content to added water content is from 100:1 to 5:4. The tablet exhibits improved hardness and strength.Type: GrantFiled: February 5, 1998Date of Patent: July 4, 2000Assignee: The Procter & Gamble CompanyInventor: Jane Margaret Warwick
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Patent number: 6054402Abstract: An improvement in a thermally insulating component for an engine part, made by sintering from ceramic materials, comprises, the thermally insulating component having a composition, consisting of a mixture of zirconium oxide in the range of about 5% to about 25% by volume and mullite in the range of about 75% to about 95% by volume. Further, the mixture of zirconium oxide and mullite is obtained by chemically mixing the zirconium oxide and mullite in their molecular states, rather than mechanically mixing them. Another feature of this invention includes, forming said thermally insulating component by slip casting and pressureless sintering the mixture of zirconium oxide and mullite at a temperature no greater than 1700.degree. C. This improvement in a thermally insulating component for an engine part, made from a mullite-zirconia ceramic composite, embodying the present invention, is particularly useful in making flame decks for cylinder heads, and insulating coverings for pistons and exhaust ports.Type: GrantFiled: March 13, 1996Date of Patent: April 25, 2000Assignee: Caterpillar Inc.Inventors: Michael C. Long, Michael H. Haselkorn, Virgil R. Hester
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Patent number: 6020300Abstract: The present invention relates to a cleaning composition which is an oil-in-water or water-in-oil emulsion, or a solution comprising non-aqueous hydrophobic solvent; and anionic or nonionic surfactant. The cleaning composition further comprises a bleach activator. The invention also relates to a method for treating a spot or stain on a textile fabric using the cleaning composition.Type: GrantFiled: July 29, 1998Date of Patent: February 1, 2000Assignee: The Procter & Gamble CompanyInventors: Eric Tcheou, Jose Luis Vega
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Patent number: 6004921Abstract: A process for making a granular suds suppressing component comprises the steps of intimately mixing a liquid or molten suds suppressing component with an emulsifier to form a premix and granulating the premix with a powder. The powder comprises aluminosilicate. The emulsifier is an anionic surfactant. The premix comprises a structuring agent selected from the group consisting of phosphonic and diphosphonic acid, carboxylic and polycarboxylic acid, succinic and disuccinic acid, and salts, and mixtures thereof.Type: GrantFiled: October 2, 1998Date of Patent: December 21, 1999Assignee: The Procter & Gamble CompanyInventors: Scott John Donoghue, Carole Patricia Denise Wilkinson
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Patent number: 5981466Abstract: The present invention relates to detergent compositions containing amine surfactants. More particularly, the invention is directed to detergent compositions containing anionic surfactants selected from the group consisting of alkyl alkoxylated sulfates and alkyl sulfates, said composition further containing specific primary and/or tertiary amines.Type: GrantFiled: August 21, 1997Date of Patent: November 9, 1999Assignee: The Procter & Gamble CompanyInventors: Joseph Paul Morelli, Dimitris Lappas, Sherri Lynn Randall, Rajan Keshav Panandiker, Jean-Pol Boutique, Chris Efstathios Housmekerides
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Patent number: 5965505Abstract: There is a provided a detergent composition containing: (a) a heavy metal ion sequestrant; and (b) an organic peroxyacid bleaching system wherein a means is provided for delaying the release to a wash solution of said peroxyacid bleach relative to the release of said heavy metal ion sequestrant. Preferably said composition additionally contains (c) a water soluble builder wherein a means is provided for delaying the release to a wash solution of said peroxyacid bleach relative to the release of said water soluble builder. A pretreat wash method is also provided.Type: GrantFiled: June 4, 1997Date of Patent: October 12, 1999Assignee: The Procter & Gamble CompanyInventors: Gerard Marcel Baillely, Janice Jeffrey, John Scott Park, Barry Stoddart
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Methods of removing pigment stain using detergent compositions containing polyamine N-oxide polymers
Patent number: 5939513Abstract: Methods of removing a pigment stain from a substrate comprise cleaning the substrate with a detergent composition comprising polyamine N-oxide polymer formed of units having structural formula (I) ##STR1## wherein P is a polymerizable unit, the N--O group may be attached to or form part of P, A is ##STR2## --O--, --S--, or --N--; --x-- is 0 or 1; and R is an aliphatic, ethoxylated aliphatic, aromatic, heterocyclic or alicyclic group and the nitrogen of the N--O group may be attached to or from part of R.Type: GrantFiled: February 4, 1997Date of Patent: August 17, 1999Assignee: The Procter & Gamble CompanyInventors: Abdennaceur Fredj, Jean-Pol Boutique -
Patent number: 5929008Abstract: Improved liquid automatic dishwashing detergent compositions comprising phosphate builder, a bleach, and a silicate which provides a high pH, namely about 11.5 or greater, wash solution and has a reserve alkalinity of about 6.2 or greater. The compositions of this invention are substantially free of carbonate salts.Type: GrantFiled: September 29, 1997Date of Patent: July 27, 1999Assignee: The Procter & Gamble CompanyInventor: Alan Scott Goldstein
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Patent number: 5925614Abstract: The invention relates to a process for the preparation of a granular detergent composition or component having a bulk density greater than 650 g/l which has greater ease and flexibility of processing. The process comprises the step of dispersing a liquid binder throughout a powder stream in a high speed mixer to form granular agglomerates, wherein the powder stream comprises a powder consisting essentially of crystalline zeolite A, P, X, or mixtures thereof, and crystalline zeolite HS. It is preferred that the ratio of zeolite A, P, X, or mixtures thereof, to crystalline zeolite HS is from 1:1 to 99:1, preferably from 3:1 to 20:1, and that the powder has an oil absorbing capacity of at least 40 ml/100 g, more preferably at least 45 ml/100 g, most preferably at least 50 ml/100 g.Type: GrantFiled: October 24, 1997Date of Patent: July 20, 1999Assignee: The Procter & Gamble CompanyInventors: Peter Rutherford Brougham, George Burgess
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Patent number: 5908456Abstract: The present invention is adapted to control the motion of a seat 102 located in a seat suspension system 100. The present invention determines a total damping force based on an absolute velocity damping force and a relative velocity damping force. Based on the absolute and relative damping force, a total damping force is determined which will provide a smooth ride for the operator throughout the range of travel of the seat, while prevention collisions with the end stops.Type: GrantFiled: August 18, 1997Date of Patent: June 1, 1999Assignee: Caterpillar Inc.Inventor: Patrick J. Wahlers
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Patent number: 5888955Abstract: Liquid dishwashing detergent compositions comprising a co-surfactant selected from amine oxides, betaines, branched alkyl carboxylates and non bridged polyhydroxy fatty acid amides. The dishwashing composition further comprises a bridged polyhydroxy fatty acid amide for improved sudsing performance.Type: GrantFiled: February 4, 1997Date of Patent: March 30, 1999Assignee: The Procter & Gamble CompanyInventors: Peter Robert Foley, Joanna Margaret Clarke, Yi-Chang Fu, Phillip Kyle Vinson
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Patent number: 5883062Abstract: A detergent composition comprises from 1% to 80%, by weight, anionic surfactant and from 0.05% to 10%, by weight, divalent ion selected from the group consisting of magnesium ions, calcium ions, and mixtures thereof. The composition is formulated such that the pH of a 1% solution of the composition in water at 20.degree. C. is between 3.5 and 4.5.Type: GrantFiled: December 20, 1996Date of Patent: March 16, 1999Assignee: The Procter & Gamble CompanyInventors: Michael Crombie Addison, Peter Robert Foley, Andrew Micheal Allsebrook
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Patent number: 5883066Abstract: The present invention is a liquid detergent composition containing anionic surfactant and cellulase. Said composition further comprises hydrophobic amines as cellulase stabilizers.Type: GrantFiled: April 8, 1997Date of Patent: March 16, 1999Assignee: The Procter & Gamble CompanyInventors: Ivan Maurice Alfons Jan Herbots, Madeleine Petronella Jansen
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Patent number: 5852245Abstract: A piezoelectric pressure sensor for detecting pressure in a combustion chamber of an internal combustion engine includes a backing plate secured within a housing. The sensor also includes a resilient prestress plate stacked on the backing plate. The resilient plate is formed of silicone elastomer. A sensor element is stacked on the resilient plate. The sensor element is composed of a piezoelectric material formed from a mixture of lead titanate and lead zirconate. A thermally insulating plate is stacked on the sensor element and a diaphragm plate is stacked on the thermally insulating plate and also secured to the housing. The diaphragm plate is exposed to combustion atmosphere and is adapted to transmit a pressure being determined onto the sensor element.Type: GrantFiled: December 13, 1996Date of Patent: December 22, 1998Assignee: Caterpillar Inc.Inventors: J. Gregory Wesling, Kurtis C. Kelley, Chuong Q. Dam
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Patent number: 5846416Abstract: A reusable fluid filter assembly comprises a cylindrical housing, a top plate assembly, a top plate attachment member, and a replaceable coreless filter element. The housing has means for removably connecting the housing to the top plate, and a hollow central core having an open first end and being connected to the closed end of the housing at the second end. The central core has a plurality of fluid outlet perforations. The top plate has a rim, fluid inlet means and fluid outlet means extending through the top plate. The top plate attachment member has a tubular shape, and a fluid outlet port extending through it. The coreless filter element having annular end caps on first and second open ends is disposed in the housing. The fluid inlet means of the top plate are in fluid communication with a fluid inlet chamber defined by the filter element and housing. The central core extends into the first open end of the filter and the hollow cylindrical chamber of the filter element.Type: GrantFiled: May 24, 1996Date of Patent: December 8, 1998Assignee: Caterpillar Inc.Inventor: David F. Gullett
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Patent number: 5843877Abstract: There is provided a composition adapted for use in machine dishwashing having reduced silver-tarnishing, as well as good cleaning performance. The composition contains an oxygen bleach and a water-soluble bismuth compound.Type: GrantFiled: July 21, 1997Date of Patent: December 1, 1998Assignee: The Procter & Gamble CompanyInventors: John Scott Park, Elizabeth Ann Shaw, Barry Stoddart
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Patent number: 5841033Abstract: A process for improving fatigue resistance of a case hardened component having a case thickness "t", subjected to one or more of rolling, sliding, abrasion, bending and pitting includes determining the magnitude of fatigue strength at surface and at a plurality of pre-selected points along thickness "t" of a component. The applied fatigue stresses acting upon the component at the surface and at the plurality of pre-selected points along thickness "t" are also determined. Then, a compressive residual stress profile is tailored from the surface to thickness "t" of the component. The compressive residual stresses at the surface and at the plurality of the pre-selected points along thickness "t" respectively have a magnitude sufficient to attain a net resultant stress which is at least 25% lower than the fatigue strength at the surface and the corresponding plurality of pre-selected points.Type: GrantFiled: December 18, 1996Date of Patent: November 24, 1998Assignee: Caterpillar Inc.Inventors: Kenneth W. Burris, Thomas E. Clements
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Patent number: 5827808Abstract: There is provided the use of a cellulose ether material to inhibit the transfer of a colored food soil from an aqueous wash solution to a substrate in a dishwashing method.Type: GrantFiled: January 31, 1997Date of Patent: October 27, 1998Assignee: The Procter & Gamble CompanyInventors: Claire Appleby, Graeme Duncan Cruickshank, Lynda Anne Jones
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Patent number: 5824630Abstract: The present invention relates to a machine dishwashing composition comprisingfrom 1% to 80% by weight of detergent builder compoundoxygen-releasing bleaching agentfrom 0.05% to 2.5% by weight, preferably 0.1% to 1% by weight of paraffin oil,nitrogen-containing corrosion inhibitor compoundMost preferably the oxygen-releasing bleaching agent is incorporated such that the level of available oxygen measured according to the method herein is from 0.3 to 1.7, preferably 0.5 to 1.Type: GrantFiled: March 19, 1996Date of Patent: October 20, 1998Assignee: The Procter & Gamble CompanyInventors: Julie Ann Christie, Fiona Susan MacBeath, John Christopher Turner