Patents by Inventor Stuart Andrew Caldwell

Stuart Andrew Caldwell 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: 20180168882
    Abstract: The present disclosure relates to a process for making an absorbent core comprising a superabsorbent polymer material and an additional particle material.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 21, 2018
    Inventors: Walter van der Klugt, Peter Armstrong-Ostle, Stuart Andrew Caldwell
  • Patent number: 8273699
    Abstract: A process for preparing a perfume composition, the process having the steps of; (a) contacting a perfume ingredient with a molten material to form a pre-mix; (b) contacting the pre-mix with a first solid material to form a soft-solid intermediate high active perfume material; (c) solidifying the molten material to form a hardened-solid intermediate high active perfume material; (d) contacting the hardened-solid intermediate high active perfume intermediate material with a second solid material to form a perfume composition, wherein the ratio of the wt % amount of perfume ingredient present in the hardened-solid intermediate high active perfume material to the wt % amount of perfume ingredient present in the perfume composition is greater than 1.5:1.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: September 25, 2012
    Assignee: The Procter & Gamble Company
    Inventors: Nicolas Guillard, Stuart Andrew Caldwell, Edward Sayers
  • Publication number: 20110015114
    Abstract: A process for preparing a perfume composition, the process having the steps of; (a) contacting a perfume ingredient with a molten material to form a pre-mix; (b) contacting the pre-mix with a first solid material to form a soft-solid intermediate high active perfume material; (c) solidifying the molten material to form a hardened-solid intermediate high active perfume material; (d) contacting the hardened-solid intermediate high active perfume intermediate material with a second solid material to form a perfume composition, wherein the ratio of the wt % amount of perfume ingredient present in the hardened-solid intermediate high active perfume material to the wt % amount of perfume ingredient present in the perfume composition is greater than 1.5:1.
    Type: Application
    Filed: September 23, 2010
    Publication date: January 20, 2011
    Applicant: The Procter & Gamble Company
    Inventors: Nicolas GUILLARD, Stuart Andrew CALDWELL, Edward SAYERS
  • 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: 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