Patents by Inventor Ian Stuart PEARCE

Ian Stuart PEARCE 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).

  • Dimethylsiloxane-alkylene oxide copolymers
    Patent number: 11642304
    Abstract: Copolymers are formed of monomers of poly(dimethylsiloxane) and poly(alkylene oxide) of the following formula: Ax-XCH2CH2—[ByCz]n—X-Ax. In the formula, each X independently represents a —CH2— group or an oxygen atom, A represents a polydimethylsiloxane derivative, B represents a polyethylene glycol unit, C represents a polypropylene glycol unit, x and n independently represent an integer from 1 to 150, and y and z independently represent an integer from 0 to 150. The copolymers can be used as emulsifiers in personal care compositions.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: May 9, 2023
    Assignee: CORNELIUS GROUP PLC
    Inventors: Thomas Guy Alabaster, Hannah Ruth Beasley-Suffolk, John Mark Bilney, Ella-Louise Ceraulo, John Ing Chuan Daly, Ian Stuart Pearce, Elizabeth Joan Smith, Robert Liam Smith, Christos Angeletakis, Yingfa Li
  • DIMETHYLSILOXANE-ALKYLENE OXIDE COPOLYMERS
    Publication number: 20210186851
    Abstract: Copolymers are formed of monomers of poly(dimethylsiloxane) and poly(alkylene oxide) of the following formula: Ax-XCH2CH2—[ByCz]n—X-Ax. In the formula, each X independently represents a —CH2— group or an oxygen atom, A represents a polydimethylsiloxane derivative, B represents a polyethylene glycol unit, C represents a polypropylene glycol unit, x and n independently represent an integer from 1 to 150, and y and z independently represent an integer from 0 to 150. The copolymers can be used as emulsifiers in personal care compositions.
    Type: Application
    Filed: July 25, 2019
    Publication date: June 24, 2021
    Inventors: Thomas Guy ALABASTER, Hannah Ruth BEASLEY-SUFFOLK, John Mark BILNEY, Ella-Louise CERAULO, John Ing Chuan DALY, Ian Stuart PEARCE, Elizabeth Joan SMITH, Robert Liam SMITH, Christos ANGELETAKIS
  • Oligomeric (TH)FP, production and uses therefor
    Patent number: 10358430
    Abstract: A method for the isolation of oligomeric 2, 2-difurylpropane (DTHFP) suitable for use on an industrial scale. A method can include using oligomeric 2, 2-difurylpropane, in particular, its use can be as a polar modifier for butadiene and styrene butadiene polymerization so is to produce rubber. Utilizing the material as an alternative to DTHFP in rubber production avoids subsequent leaching of the DTHFP into the environment as the oligomeric 2, 2-difurylpropane (DTHFP) gives rise to much lower levels of leaching.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: July 23, 2019
    Inventors: Ian Stuart Pearce, David Dunn, Howard Winston Tyrrell Sutton, John Ing Chuan Daly, Simon Jonathon Grant
  • Oligomeric (TH)FP, production and uses therefor
    Publication number: 20190062291
    Abstract: A method for the isolation of oligomeric 2, 2-difurylpropane (DTHFP) suitable for use on an industrial scale. A method can include using oligomeric 2, 2-difurylpropane, in particular, its use can be as a polar modifier for butadiene and styrene butadiene polymerisation so is to produce rubber. Utilising the material as an alternative to DTHFP in rubber production avoids subsequent leaching of the DTHFP into the environment as the oligomeric 2, 2-difurylpropane (DTHFP) gives rise to much lower levels of leaching.
    Type: Application
    Filed: August 25, 2017
    Publication date: February 28, 2019
    Inventors: Ian Stuart PEARCE, David DUNN, Howard Winston Tyrrell SUTTON, John Ing Chuan DALY, Simon Jonathon GRANT