Patents by Inventor Celine RIOUAL

Celine RIOUAL 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).

  • PROCESS AND APPARATUS FOR PREPARING PURIFIED STYRENE COMPOSITION FROM STYRENE CONTAINING FEEDSTOCK
    Publication number: 20240132426
    Abstract: A method for preparing a purified styrene composition with a styrene yield of at least 80%. The method comprises providing a crude composition containing styrene, and subjecting the crude composition to at least one crystallization step. The at least one crystallization step comprises at least one static crystallization stage and at least one dynamic crystallization stage.
    Type: Application
    Filed: December 6, 2023
    Publication date: April 25, 2024
    Inventors: Rahul KHANDELWAL, Joseph C. GENTRY, Randi WYTCHERLEY, Kimberly ANDERSON, Meta NAULITA-ELLIS, Claudia PUDACK, Celine RIOUAL, Christoph KIRSCHNER, B. Bryant SLIMP, Manfred STEPANSKI, Erik TEMMEL
  • Process and apparatus for preparing purified styrene composition from styrene containing feedstock
    Patent number: 11919853
    Abstract: A method for preparing a purified styrene composition is provided. The method includes providing a crude composition and subjecting the crude composition to at least one crystallization step. The crude composition contains 70% by weight or more styrene based on the total weight of the crude composition. The at least one crystallization step comprises at least one of a static crystallization stage and a dynamic crystallization stage. The crude composition contains at least one impurity selected from the group consisting of: color inducing species, oxygenates, sulfur species, alpha-methylstyrene, and mixtures thereof.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: March 5, 2024
    Assignee: SULZER MANAGEMENT AG
    Inventors: Rahul Khandelwal, Joseph C. Gentry, Randi Wytcherley, Kimberly Anderson, Meta Naulita-Ellis, Claudia Pudack, Celine Rioual, Christoph Kirschner, B. Bryant Slimp, Manfred Stepanski, Erik Temmel
  • Process and apparatus for preparing purified styrene composition from styrene containing feedstock
    Patent number: 11891358
    Abstract: A method for preparing a purified styrene composition with a styrene yield of at least 80%. The method comprises providing a crude composition containing styrene, and subjecting the crude composition to at least one crystallization step. The at least one crystallization step comprises at least one static crystallization stage and at least one dynamic crystallization stage.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: February 6, 2024
    Assignee: SULZER MANAGEMENT AG
    Inventors: Rahul Khandelwal, Joseph C. Gentry, Randi Wytcherley, Kimberly Anderson, Meta Naulita-Ellis, Claudia Pudack, Celine Rioual, Christoph Kirschner, B. Bryant Slimp, Manfred Stepanski, Erik Temmel
  • PROCESS AND APPARATUS FOR PREPARING PURIFIED STYRENE COMPOSITION FROM STYRENE CONTAINING FEEDSTOCK
    Publication number: 20230174440
    Abstract: A method for preparing a purified styrene composition with a styrene yield of at least 80%. The method comprises providing a crude composition containing styrene, and subjecting the crude composition to at least one crystallization step. The at least one crystallization step comprises at least one static crystallization stage and at least one dynamic crystallization stage.
    Type: Application
    Filed: May 7, 2021
    Publication date: June 8, 2023
    Inventors: Rahul KHANDELWAL, Joseph C. GENTRY, Randi WYTCHERLEY, Kimberly ANDERSON, Meta NAULITA-ELLIS, Claudia PUDACK, Celine RIOUAL, Christoph KIRSCHNER, B. Bryant SLIMP, Manfred STEPANSKI, Erik TEMMEL
  • PROCESS AND APPARATUS FOR PREPARING PURIFIED STYRENE COMPOSITION FROM STYRENE CONTAINING FEEDSTOCK
    Publication number: 20230174441
    Abstract: A method for preparing a purified styrene composition is provided. The method includes providing a crude composition and subjecting the crude composition to at least one crystallization step. The crude composition contains 70% by weight or more styrene based on the total weight of the crude composition. The at least one crystallization step comprises at least one of a static crystallization stage and a dynamic crystallization stage. The crude composition contains at least one impurity selected from the group consisting of: color inducing species, oxygenates, sulfur species, alpha-methylstyrene, and mixtures thereof.
    Type: Application
    Filed: May 7, 2021
    Publication date: June 8, 2023
    Inventors: Rahul KHANDELWAL, Joseph C. GENTRY, Randi WYTCHERLEY, Kimberly ANDERSON, Meta NAULITA-ELLIS, Claudia PUDACK, Celine RIOUAL, Christoph KIRSCHNER, B. Bryant SLIMP, Manfred STEPANSKI, Erik TEMMEL