Patents by Inventor Stuart Anthony Barnett

Stuart Anthony Barnett 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).

  • Benefit delivery particle, process for preparing said particle, compositions comprising said particles and a method for treating substrates
    Patent number: 9993401
    Abstract: The invention provides a benefit agent delivery particle having an average diameter of less than 50 micron comprising; at least one shell formed by a step-growth polymerization reaction, preferably involving an isocyanate monomer, more preferably a urethane and/or a urea. interior said shell, at least one region formed by chain-growth polymerization reaction (preferably a free-radical polymerization) which does not involve an isocyanate, c) optionally, a benefit agent interior to said shell, and/or a deposition aid exterior to said shell. The invention further provides a process for the preparation of such particles wherein the shell is formed prior to the chain-growth polymerization of the at least one region interior of the shell, preferably be forming the shell at a temperature at which the chain-growth reaction is inhibited.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: June 12, 2018
    Assignee: Conopco, Inc.
    Inventors: Stuart Anthony Barnett, Craig Warren Jones, Adam John Limer, James Merrington, Jeremy Nicholas Winter
  • BENEFIT DELIVERY PARTICLE, PROCESS FOR PREPARING SAID PARTICLE, COMPOSITIONS COMPRISING SAID PARTICLES AND A METHOD FOR TREATING SUBSTRATES
    Publication number: 20140378369
    Abstract: The invention provides a benefit agent delivery particle having an average diameter of less than 50 micron comprising; at least one shell formed by a step-growth polymerisation reaction, preferably involving an isocyanate monomer, more preferably a urethane and/or a urea, interior said shell, at least one region formed by chain-growth polymerisation reaction (preferably a free-radical polymerisation) which does not involve an isocyanate, c) optionally, a benefit agent interior to said shell, and/or a deposition aid exterior to said shell. The invention further provides a process for the preparation of such particles wherein the shell is formed prior to the chain-growth polymerisation of the at least one region interior of the shell, preferably be forming the shell at a temperature at which the chain-growth reaction is inhibited.
    Type: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Applicant: Conopco, Inc., D/B/A UNILEVER
    Inventors: Stuart Anthony Barnett, Criag Warren Jones, Adam John Limer, James Merrington, Jeremy Nicholas Winter
  • BENEFIT DELIVERY PARTICLE, PROCESS FOR PREPARING SAID PARTICLE, COMPOSITIONS COMPRISING SAID PARTICLES AND A METHOD FOR TREATING SUBSTRATES
    Publication number: 20130122070
    Abstract: The invention provides a benefit agent delivery particle having an average diameter of less than 50 micron comprising; at least one shell formed by a step-growth polymerisation reaction, preferably involving an isocyanate monomer, more preferably a urethane and/or a urea, interior said shell, at least one region formed by chain-growth polymerisation reaction (preferably a free-radical polymerisation) which does not involve an isocyanate, c) optionally, a benefit agent interior to said shell, and/or a deposition aid exterior to said shell. The invention further provides a process for the preparation of such particles wherein the shell is formed prior to the chain-growth polymerisation of the at least one region interior of the shell, preferably be forming the shell at a temperature at which the chain-growth reaction is inhibited.
    Type: Application
    Filed: July 11, 2011
    Publication date: May 16, 2013
    Inventors: Stuart Anthony Barnett, Craig Warren Jones, Adam John Limer, James Merrington, Jeremy Nicholas Winter