Patents by Inventor Christian J. Isaac

Christian J. Isaac 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).

  • Removal of acids from tertiary amide solvents
    Patent number: 8476424
    Abstract: A method of removing a carboxylic acid from a liquid that contains a tertiary amide solvent includes a step of contacting the liquid with an extraction medium comprising an amine. The amine is immiscible with both water and the tertiary amide solvent, and the contacting step forms a de-acidified phase containing the tertiary amide solvent and a phase containing the extraction medium and the carboxylic acid. Both the liquid that contains the tertiary amide solvent and the de-acidified phase may also contain a sucrose-6-acylate.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: July 2, 2013
    Assignee: Tate & Lyle Technology Limited
    Inventors: John Kerr, Robert Jansen, Christian J. Isaac, James Edwin Wiley, Jr., Duane A. Leinhos
  • REMOVAL OF ACIDS FROM TERTIARY AMIDE SOLVENTS
    Publication number: 20090259034
    Abstract: A method of removing a carboxylic acid from a liquid that contains a tertiary amide solvent includes a step of contacting the liquid with an extraction medium comprising an amine. The amine is immiscible with both water and the tertiary amide solvent, and the contacting step forms a de-acidified phase containing the tertiary amide solvent and a phase containing the extraction medium and the carboxylic acid. Both the liquid that contains the tertiary amide solvent and the de-acidified phase may also contain a sucrose-6-acylate.
    Type: Application
    Filed: March 13, 2009
    Publication date: October 15, 2009
    Applicant: Tate & Lyle Technology Limited
    Inventors: John Kerr, Robert Jansen, Christian J. Isaac, James Edwin Wiley, JR., Duane A. Leinhos