Patents by Inventor Karen Ayme

Karen Ayme 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).

  • Additive for reducing chromium (VI) to chromium (III) ions
    Patent number: 8361221
    Abstract: The invention relates to an additive for reducing Cr(VI) ions to Cr(III) ions, comprising a complex of tin(II) and a carboxylic acid or a salt thereof, and to the process for the preparation thereof. It also relates to a process for preparing a material having a low chromium(VI) content. Finally, it relates to the use of said additive for reducing chromium(VI) ions to chromium(III) ions.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: January 29, 2013
    Assignee: Chryso
    Inventors: Pierre-Antoine Andreani, Bruno Pellerin, Karen Ayme
  • ADDITIVE FOR REDUCING CHROMIUM (VI) TO CHROMIUM (III) IONS
    Publication number: 20090266272
    Abstract: The invention relates to an additive for reducing Cr(VI) ions to Cr(III) ions, comprising a complex of tin(II) and a carboxylic acid or a salt thereof, and to the process for the preparation thereof. It also relates to a process for preparing a material having a low chromium(VI) content. Finally, it relates to the use of said additive for reducing chromium(VI) ions to chromium(III) ions.
    Type: Application
    Filed: July 6, 2009
    Publication date: October 29, 2009
    Applicant: CHRYSO
    Inventors: Pierre-Antoine Andreani, Bruno Pellerin, Karen Ayme
  • ADDITIVE FOR REDUCING CHROMIUM (VI) IONS TO CHROMIUM (III) IONS
    Publication number: 20060234878
    Abstract: The invention relates to an additive for reducing Cr(VI) ions to Cr(III) ions, comprising a complex of tin(II) and a carboxylic acid or a salt thereof, and to the process for the preparation thereof. It also relates to a process for preparing a material having a low chromium(VI) content. Finally, it relates to the use of said additive for reducing chromium(VI) ions to chromium(III) ions.
    Type: Application
    Filed: April 17, 2006
    Publication date: October 19, 2006
    Inventors: Pierre-Antoine Andreani, Bruno Pellerin, Karen Ayme