Patents Represented by Attorney, Agent or Law Firm Pankaj M. Khosla
  • Patent number: 6730645
    Abstract: 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: Grant
    Filed: July 11, 2001
    Date of Patent: May 4, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Peter Robert Foley, Xiaoqing Song, Lucio Pieroni
  • Patent number: 6083895
    Abstract: 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: Grant
    Filed: February 5, 1998
    Date of Patent: July 4, 2000
    Assignee: The Procter & Gamble Company
    Inventor: Jane Margaret Warwick
  • Patent number: 6054402
    Abstract: 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: Grant
    Filed: March 13, 1996
    Date of Patent: April 25, 2000
    Assignee: Caterpillar Inc.
    Inventors: Michael C. Long, Michael H. Haselkorn, Virgil R. Hester
  • Patent number: 6020300
    Abstract: 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: Grant
    Filed: July 29, 1998
    Date of Patent: February 1, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Eric Tcheou, Jose Luis Vega
  • Patent number: 6004921
    Abstract: 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: Grant
    Filed: October 2, 1998
    Date of Patent: December 21, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Scott John Donoghue, Carole Patricia Denise Wilkinson
  • Patent number: 5981466
    Abstract: 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: Grant
    Filed: August 21, 1997
    Date of Patent: November 9, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Joseph Paul Morelli, Dimitris Lappas, Sherri Lynn Randall, Rajan Keshav Panandiker, Jean-Pol Boutique, Chris Efstathios Housmekerides
  • Patent number: 5965505
    Abstract: 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: Grant
    Filed: June 4, 1997
    Date of Patent: October 12, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Gerard Marcel Baillely, Janice Jeffrey, John Scott Park, Barry Stoddart
  • Patent number: 5939513
    Abstract: 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: Grant
    Filed: February 4, 1997
    Date of Patent: August 17, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Abdennaceur Fredj, Jean-Pol Boutique
  • Patent number: 5929008
    Abstract: 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: Grant
    Filed: September 29, 1997
    Date of Patent: July 27, 1999
    Assignee: The Procter & Gamble Company
    Inventor: Alan Scott Goldstein
  • Patent number: 5925614
    Abstract: 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: Grant
    Filed: October 24, 1997
    Date of Patent: July 20, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Peter Rutherford Brougham, George Burgess
  • Patent number: 5908456
    Abstract: 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: Grant
    Filed: August 18, 1997
    Date of Patent: June 1, 1999
    Assignee: Caterpillar Inc.
    Inventor: Patrick J. Wahlers
  • Patent number: 5888955
    Abstract: 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: Grant
    Filed: February 4, 1997
    Date of Patent: March 30, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Peter Robert Foley, Joanna Margaret Clarke, Yi-Chang Fu, Phillip Kyle Vinson
  • Patent number: 5883062
    Abstract: 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: Grant
    Filed: December 20, 1996
    Date of Patent: March 16, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Michael Crombie Addison, Peter Robert Foley, Andrew Micheal Allsebrook
  • Patent number: 5883066
    Abstract: The present invention is a liquid detergent composition containing anionic surfactant and cellulase. Said composition further comprises hydrophobic amines as cellulase stabilizers.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: March 16, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Ivan Maurice Alfons Jan Herbots, Madeleine Petronella Jansen
  • Patent number: 5852245
    Abstract: 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: Grant
    Filed: December 13, 1996
    Date of Patent: December 22, 1998
    Assignee: Caterpillar Inc.
    Inventors: J. Gregory Wesling, Kurtis C. Kelley, Chuong Q. Dam
  • Patent number: 5846416
    Abstract: 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: Grant
    Filed: May 24, 1996
    Date of Patent: December 8, 1998
    Assignee: Caterpillar Inc.
    Inventor: David F. Gullett
  • Patent number: 5843877
    Abstract: 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: Grant
    Filed: July 21, 1997
    Date of Patent: December 1, 1998
    Assignee: The Procter & Gamble Company
    Inventors: John Scott Park, Elizabeth Ann Shaw, Barry Stoddart
  • Patent number: 5841033
    Abstract: 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: Grant
    Filed: December 18, 1996
    Date of Patent: November 24, 1998
    Assignee: Caterpillar Inc.
    Inventors: Kenneth W. Burris, Thomas E. Clements
  • Patent number: 5827808
    Abstract: 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: Grant
    Filed: January 31, 1997
    Date of Patent: October 27, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Claire Appleby, Graeme Duncan Cruickshank, Lynda Anne Jones
  • Patent number: 5824630
    Abstract: 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: Grant
    Filed: March 19, 1996
    Date of Patent: October 20, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Julie Ann Christie, Fiona Susan MacBeath, John Christopher Turner