Patents by Inventor François Payan

François Payan 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: 20240158244
    Abstract: The invention relates to a process for producing a silicate from a plant ash comprising crystalline silica. The process comprises reacting said plant ash with a base in the presence of an additive which is a salt comprising a multivalent anion. The invention also relates to a silicate obtainable from said process and to a process for preparing a precipitated silica from said silicate. The invention also concerns a reaction mixture which can be used for said processes.
    Type: Application
    Filed: October 27, 2023
    Publication date: May 16, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: François Payan, Youssef Chkounda
  • Publication number: 20240140810
    Abstract: The invention relates to a process for producing a silicate from a plant ash comprising crystalline silica, wherein at least a portion of said crystalline silica is cristobalite. The process comprises reacting said plant ash with a base in the presence of an additive which is a salt comprising a sulfur oxyanion. The invention also relates to a silicate obtainable from said process and to a process for preparing a precipitated silica from said silicate. The invention also concerns a reaction mixture which can be used for said processes.
    Type: Application
    Filed: October 27, 2023
    Publication date: May 2, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: François Payan, Youssef Chkounda