Patents by Inventor Hossam Hassan Tantawy
Hossam Hassan Tantawy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20110257059Abstract: A process for the production of a spray-dried detergent powder including a hexagonal-phase-in-water-forming surfactant the process including the steps of: (i) spraying into a spray-drying tower a detergent slurry preferably free of a hexagonal-phase-in-water-forming surfactant; and (ii) simultaneously spraying a paste having a hexagonal-phase-in-water-forming surfactant, whereby droplets of the slurry encounter droplets or powder of the hexagonal-phase-in-water-forming surfactant paste so as to form composite granules.Type: ApplicationFiled: April 14, 2011Publication date: October 20, 2011Inventors: Nigel Patrick Somerville Roberts, Hossam Hassan Tantawy, Eric San Jose Robles
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Publication number: 20110177993Abstract: A process for preparing a particle, the particle having: (i) cleaning active; (ii) structurant having a glass transition temperature; and (iii) optionally, plasticizer; wherein the process includes the step of: (a) contacting the plasticizer, the structurant, and the cleaning active to form a mixture, and forming a particle from the mixture; (b) optionally, removing at least part of the plasticizer from the mixture and/or particle of step (a); wherein the structurant undergoes a glass transformation during step (a) to create an amorphous structure which stabilizes the cleaning active.Type: ApplicationFiled: January 20, 2011Publication date: July 21, 2011Inventors: Paul R. Mort, III, Hiram Alejandro Rubalcava Taylor, Francisco Pallares Galvan, Marco Antonio Escobar Velazquez, Hossam Hassan Tantawy, Vincenzo Guida, Johannes Georg Winter, David William York, Nigel Patrick Somerville Roberts, Kermit Wayne Kinne
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Publication number: 20110146099Abstract: A process for preparing a spray-dried detergent powder having: (i) detersive surfactant; and (ii) other detergent ingredients; wherein the process includes the steps of: (a) forming an aqueous detergent slurry in a mixer; (b) transferring the aqueous detergent slurry from the mixer to a pipe leading through a first pump and then through a second pump to a spray nozzle; (c) contacting a detergent ingredient to the aqueous detergent slurry in the pipe after the first pump and before the second pump to form a mixture; (d) spraying the mixture through the spray nozzle into a spray-drying tower; and (e) spray-drying the mixture to form a spray-dried powder, wherein the pressure drop between (i) the pressure in the pipe at the outlet of the first pump to (ii) the pressure in the pipe at the inlet to the second pump is less than 8×105 Pa.Type: ApplicationFiled: December 15, 2010Publication date: June 23, 2011Inventors: Larry Savio Cardozo, Hossam Hassan Tantawy, James Robert Lickiss, Nigel Patrick Somerville Roberts
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Publication number: 20110147967Abstract: A process for preparing a spray-dried detergent powder having: (i) detersive surfactant; (ii) polymer; and (iii) other detergent ingredients; wherein the process comprises the steps of: (a) forming an aqueous detergent slurry in a mixer; (b) transferring the aqueous detergent slurry from the mixer through at least one pump to a spray nozzle; (c) contacting a polymer to the aqueous detergent slurry after the mixer and before the spray nozzle to form a mixture; (d) spraying the mixture through the spray nozzle into a spray-drying tower; and (e) spray-drying the mixture to form a spray-dried powder.Type: ApplicationFiled: December 13, 2010Publication date: June 23, 2011Inventors: Larry Savio Cardozo, Hossam Hassan Tantawy, James Robert Lickiss, Nigel Patrick Somerville Roberts
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Publication number: 20110147966Abstract: A process for preparing a powder from a slurry wherein the slurry enters a spary nozzle at conditions such that either: (I) at the temperature at which the slurry enters the nozzle, the slurry is at a pressure that is equal to or greater than the vapour pressure of the volatile component, and wherein, the slurry enters the nozzle at a temperature such that the vapour pressure of the volatile compound is above the pressure in the drying apparatus; or (II) the volatile component is in supercritical form when the slurry enters the nozzle, and wherein, the conditions in the drying apparatus are such that when the volatile component enters the drying apparatus, at least a portion of the volatile component is in gaseous form.Type: ApplicationFiled: March 2, 2011Publication date: June 23, 2011Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Urwin Harrogate, David William York
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Publication number: 20110147963Abstract: A process for preparing a spray-dried detergent powder including the steps of (i) mid-chain branched detersive surfactant; and (ii) other detergent ingredients; wherein the process includes the steps of: (a) forming an aqueous detergent slurry in a mixer; (b) transferring the aqueous detergent slurry from the mixer through at least one pump to a spray pressure nozzle; (c) contacting mid-chain branched detersive surfactant and/or acid precursor thereof to the aqueous detergent slurry after the mixer and before the spray pressure nozzle to form a mixture; (d) spraying the mixture through the spray pressure nozzle into a spray-drying tower; and (e) spray-drying the mixture to form a spray-dried powder.Type: ApplicationFiled: December 13, 2010Publication date: June 23, 2011Inventors: Larry Savio CARDOZO, Hossam Hassan TANTAWY, James Robert LICKISS, Nigel Patrick SOMERVILLE ROBERTS
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Publication number: 20110147964Abstract: A process for preparing a spray-dried powder having: (i) detersive surfactant; and (ii) other detergent ingredients; wherein the process has the steps of: (a) forming an aqueous detergent slurry in a mixer; (b) transferring the aqueous detergent slurry from the mixer in a pipe leading through at least one pump to a spray nozzle; (c) contacting a detergent ingredient to the aqueous detergent slurry in the pipe after the mixer and before the spray nozzle to form a mixture; (d) spraying the mixture through the spray nozzle into a spray-drying tower; and (e) spray-drying the mixture to form a spray-dried powder, wherein in step (c) the aqueous detergent slurry and the resultant mixture are in laminar flow, and wherein in step (c) the ratio of (i) the flow rate of the aqueous detergent slurry in kgmin?1 to (ii) the flow rate of the detergent ingredient in kgmin?1 is in the range of from 1 to 70.Type: ApplicationFiled: December 15, 2010Publication date: June 23, 2011Inventors: Larry Savio Cardozo, Hossam Hassan Tantawy, James Robert Lickiss, Nigel Patrick Somerville Roberts
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Publication number: 20110147962Abstract: A process for preparing a spray-dried detergent powder having (i) detersive surfactant; and (ii) other detergent ingredients; wherein the process comprises the steps of: (a) forming an aqueous detergent slurry in a mixer; (b) transferring the aqueous detergent slurry from the mixer through at least one pump to a spray nozzle; (c) contacting alkoxylated anionic detersive surfactant and/or acid precursor thereof to the aqueous detergent slurry after the mixer and before the spray nozzle to form a mixture; (d) spraying the mixture through the spray nozzle into a spray-drying tower; and (e) spray-drying the mixture to form a spray-dried powder.Type: ApplicationFiled: December 13, 2010Publication date: June 23, 2011Inventors: Larry Savio Cardozo, Hossam Hassan Tantawy, James Robert Lickiss, Nigel Patrick Somerville Roberts
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Publication number: 20110021405Abstract: A continuous process for making a solid particulate laundry detergent composition having the steps of: (a) forming a soft surfactant particle having a cake strength of from about 30N to about 200N; and (b) contacting the soft surfactant particle with a free-flowing heterogeneous particulate mixture having multiple chemically distinct detergent particle populations, wherein said free-flowing heterogeneous particulate mixture has a cake strength of from about 0N to about 20N, wherein the free-flowing heterogeneous particulate mixture has a weight average particle size of from about 50 micrometers to 2000 micrometers, and wherein the ratio of (i) the cake strength of the soft surfactant particle in N to (ii) the time between step (a) and step (b) in minutes is in the range of from 6Nmin?1 to 2000Nmin?1.Type: ApplicationFiled: September 29, 2010Publication date: January 27, 2011Applicant: The Procter & Gamble CompanyInventors: Nigel Patrick Somerville Roberts, Hossam Hassan Tantawy
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Patent number: 7842657Abstract: The present invention relates to a process for preparing a spray-dried powder comprising (i) anionic detersive surfactant; (ii) from 0 wt % to 10 wt % zeolite builder; (iii) from 0 wt % to 10 wt % phosphate builder; and (iv) optionally from 0 wt % to 15 wt % silicate salt; wherein the process comprises the steps of: (a) forming an alkaline slurry in a mixer, the slurry having a viscosity of from X to Y s?1 at a temperature of 70° C.Type: GrantFiled: June 8, 2009Date of Patent: November 30, 2010Assignee: The Procter & Gamble CompanyInventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Simon Howe, Stuart Andrew Caldwell
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Patent number: 7811980Abstract: The present invention relates to a process for preparing a spray-dried powder comprising (i) anionic detersive surfactant; (ii) from 0 wt % to 10 wt % zeolite builder; (iii) from 0 wt % to 10 wt % phosphate builder; and (iv) optionally from 0 wt % to 15 wt % silicate salt; wherein the process comprises the steps of: (a) forming an alkaline slurry in a mixer, the slurry comprising: (v) from 0 wt % to 15 wt % anionic detersive surfactant; (vi) from 0 wt % to 35 wt % water; and (b) transferring the alkaline slurry from the mixer through at least one pump to a spray pressure nozzle; (c) contacting an acid anionic detersive surfactant precursor to the alkaline slurry after the mixer and before the spray pressure nozzle to form a mixture; (d) spraying the mixture through the spray pressure nozzle into a spray-drying tower; (e) spray-drying the mixture to form a spray-dried powder; and (f) optionally, contacting an alkalinity source with the alkaline slurry and/or the acid anionic detersive surfactant precursor, andType: GrantFiled: June 9, 2009Date of Patent: October 12, 2010Assignee: The Procter & Gamble CompanyInventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Simon Howe, Stuart Andrew Caldwell
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Publication number: 20090325844Abstract: The present invention relates to a spray-dried powder comprising: (a) anionic detersive surfactant; (b) from 0 wt % to 10 wt % zeolite builder; (c) from 0 wt % to 10 wt % phosphate builder; (d) at least 2 wt % water; (e) clay; and (f) optionally from 0 wt % to 20 wt % silicate salt.Type: ApplicationFiled: June 1, 2009Publication date: December 31, 2009Inventors: Hossam Hassan Tantawy, Andrew Brian Greenaway Patton
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Publication number: 20090325846Abstract: The present invention relates to a process for preparing a spray-dried powder comprising: (i) anionic detersive surfactant; (ii) from 0 wt % to 10 wt % zeolite builder; (iii) from 0 wt % to 10 wt % phosphate builder; and (iv) from 3 wt % to 15 wt % silicate salt; the process comprising the steps of: (a) heating an aqueous slurry to a temperature above 100° C. to form a heated slurry; and (b) spraying the heated slurry at temperature above 100° C. into a spray-drying tower; (c) spray-drying the slurry to form a spray-dried powder.Type: ApplicationFiled: June 18, 2009Publication date: December 31, 2009Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Urwin Harrogate
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Publication number: 20090325850Abstract: The present invention relates to a process for preparing a spray-dried powder comprising (i) anionic detersive surfactant; (ii) from 0 wt % to 10 wt % zeolite builder; (iii) from 0 wt % to 10 wt % phosphate builder; and (iv) optionally from 0 wt % to 15 wt % silicate salt; wherein the process comprises the steps of: (a) forming an alkaline slurry in a mixer, the slurry having a viscosity of from X to Y s?1 at a temperature of 70° C.Type: ApplicationFiled: June 8, 2009Publication date: December 31, 2009Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Simon Howe, Stuart Andrew Caldwell
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Publication number: 20090325847Abstract: The present invention relates to a process for preparing a powder comprising: (i) anionic detersive surfactant; (ii) from 0 wt % to 10 wt % zeolite builder; (iii) from 0 wt % to 10 wt % phosphate builder; and (iv) from 0 wt % to 15 wt % silicate salt; wherein the process comprises the steps of: (a) forming a slurry that comprises a volatile compound; and (b) spraying the slurry through a nozzle into a drying apparatus; and (c) drying the slurry to form a powder, wherein the slurry enters the nozzle at conditions such that either: (I) at the temperature at which the slurry enters the nozzle, the slurry is at a pressure that is equal to or greater than the vapour pressure of the volatile component, and wherein, the slurry enters the nozzle at a temperature such that the vapour pressure of the volatile compound is above the pressure in the drying apparatus; or (II) the volatile component is in supercritical form when the slurry enters the nozzle, and wherein, the conditions in the drying apparatus are sucType: ApplicationFiled: June 18, 2009Publication date: December 31, 2009Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Urwin Harrogate, David William York
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Publication number: 20090325845Abstract: The present invention relates to a solid laundry detergent composition comprising: (a) anionic detersive surfactant; (b) from 0 wt % to 10 wt % zeolite builder; (c) from 0 wt % to 10 wt % phosphate builder; (d) at least 2 wt % water; (e) clay; and (f) optionally from 0 wt % to 20 wt % silicate salt, wherein the clay is in non-spray-dried form, and wherein at least part of the anionic detersive surfactant is in spray-dried form.Type: ApplicationFiled: June 12, 2009Publication date: December 31, 2009Inventors: Hossam Hassan Tantawy, Andrew Brian Greenaway Patton
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Patent number: 6706773Abstract: The present invention relates to a process for preparing a foam component, said process comprises the steps of extruding a viscous mixture from a rotating extrusion plate onto a receiving surface. Said process provides a convenient, efficient, simple means of preparing foam components, especially foam components suitable for use in cleaning compositions. The present invention also provides a foam component obtainable therefrom.Type: GrantFiled: March 27, 2002Date of Patent: March 16, 2004Assignee: The Procter & Gamble CompanyInventors: Matthew Grady McGoff, Scott Edward Stephans, Hossam Hassan Tantawy, Christopher Charles Driffield
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Publication number: 20030073604Abstract: The present invention relates to a water-soluble and/or a water-dispersible particle having: a mean particle diameter of less than 20 mm, preferably less than 2 mm; a hardness (H) of 500 MPa or less, when measured at a temperature of 20° C., a relative humidity of 40%; and a fracture toughness (Kc) of 0.04 MPa.m1/2 or greater, when measured at a temperature of 20° C., a relative humidity of 40% and a strain rate of from 1×10−4 to 1×104 s−1, said particle comprises an active ingredient and a matrix suitable for delivering said active ingredient to an aqueous environment, said particle is not freeze dried.Type: ApplicationFiled: April 4, 2002Publication date: April 17, 2003Applicant: The Procter & Gamble CompanyInventors: Matthew Grady McGoff, Hossam Hassan Tantawy, Phillip Jan Howard
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Publication number: 20030017959Abstract: The present invention relates to a water-soluble and/or water-dispersible particle comprising an active ingredient uniformly dispersed, preferably an enzyme, in a matrix comprising from 20-95% by weight of the particle of polyvinyl alcohol of a molecular weight of 10-30K daltons. The present invention further relates to a process to obtain a particle, to a detergent composition comprising the particle and to the use of particle to minimize, reduce or prevent the generation of dust while providing excellent cleaning on enzyme sensitive stains and soils and on particulate stains, improved thermostability and fabric softness performance.Type: ApplicationFiled: April 4, 2002Publication date: January 23, 2003Applicant: The Procter & Gamble CompanyInventors: Andre Cesar Baeck, Hossam Hassan Tantawy, Ann Katrien Marie Agnes Verschuere