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).

  • Publication number: 20110257059
    Abstract: 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: Application
    Filed: April 14, 2011
    Publication date: October 20, 2011
    Inventors: Nigel Patrick Somerville Roberts, Hossam Hassan Tantawy, Eric San Jose Robles
  • Publication number: 20110177993
    Abstract: 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: Application
    Filed: January 20, 2011
    Publication date: July 21, 2011
    Inventors: 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
  • Publication number: 20110146099
    Abstract: 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: Application
    Filed: December 15, 2010
    Publication date: June 23, 2011
    Inventors: Larry Savio Cardozo, Hossam Hassan Tantawy, James Robert Lickiss, Nigel Patrick Somerville Roberts
  • Publication number: 20110147967
    Abstract: 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: Application
    Filed: December 13, 2010
    Publication date: June 23, 2011
    Inventors: Larry Savio Cardozo, Hossam Hassan Tantawy, James Robert Lickiss, Nigel Patrick Somerville Roberts
  • Publication number: 20110147966
    Abstract: 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: Application
    Filed: March 2, 2011
    Publication date: June 23, 2011
    Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Urwin Harrogate, David William York
  • Publication number: 20110147963
    Abstract: 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: Application
    Filed: December 13, 2010
    Publication date: June 23, 2011
    Inventors: Larry Savio CARDOZO, Hossam Hassan TANTAWY, James Robert LICKISS, Nigel Patrick SOMERVILLE ROBERTS
  • Publication number: 20110147964
    Abstract: 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: Application
    Filed: December 15, 2010
    Publication date: June 23, 2011
    Inventors: Larry Savio Cardozo, Hossam Hassan Tantawy, James Robert Lickiss, Nigel Patrick Somerville Roberts
  • Publication number: 20110147962
    Abstract: 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: Application
    Filed: December 13, 2010
    Publication date: June 23, 2011
    Inventors: Larry Savio Cardozo, Hossam Hassan Tantawy, James Robert Lickiss, Nigel Patrick Somerville Roberts
  • Publication number: 20110021405
    Abstract: 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: Application
    Filed: September 29, 2010
    Publication date: January 27, 2011
    Applicant: The Procter & Gamble Company
    Inventors: Nigel Patrick Somerville Roberts, Hossam Hassan Tantawy
  • Patent number: 7842657
    Abstract: 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: Grant
    Filed: June 8, 2009
    Date of Patent: November 30, 2010
    Assignee: The Procter & Gamble Company
    Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Simon Howe, Stuart Andrew Caldwell
  • Patent number: 7811980
    Abstract: 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, and
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: October 12, 2010
    Assignee: The Procter & Gamble Company
    Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Simon Howe, Stuart Andrew Caldwell
  • Publication number: 20090325844
    Abstract: 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: Application
    Filed: June 1, 2009
    Publication date: December 31, 2009
    Inventors: Hossam Hassan Tantawy, Andrew Brian Greenaway Patton
  • Publication number: 20090325846
    Abstract: 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: Application
    Filed: June 18, 2009
    Publication date: December 31, 2009
    Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Urwin Harrogate
  • Publication number: 20090325850
    Abstract: 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: Application
    Filed: June 8, 2009
    Publication date: December 31, 2009
    Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Simon Howe, Stuart Andrew Caldwell
  • Publication number: 20090325847
    Abstract: 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 suc
    Type: Application
    Filed: June 18, 2009
    Publication date: December 31, 2009
    Inventors: Hossam Hassan Tantawy, Nigel Patrick Somerville Roberts, Urwin Harrogate, David William York
  • Publication number: 20090325845
    Abstract: 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: Application
    Filed: June 12, 2009
    Publication date: December 31, 2009
    Inventors: Hossam Hassan Tantawy, Andrew Brian Greenaway Patton
  • Patent number: 6706773
    Abstract: 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: Grant
    Filed: March 27, 2002
    Date of Patent: March 16, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Matthew Grady McGoff, Scott Edward Stephans, Hossam Hassan Tantawy, Christopher Charles Driffield
  • Publication number: 20030073604
    Abstract: 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: Application
    Filed: April 4, 2002
    Publication date: April 17, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Matthew Grady McGoff, Hossam Hassan Tantawy, Phillip Jan Howard
  • Publication number: 20030017959
    Abstract: 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: Application
    Filed: April 4, 2002
    Publication date: January 23, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Andre Cesar Baeck, Hossam Hassan Tantawy, Ann Katrien Marie Agnes Verschuere