Patents by Inventor Annick Thoer

Annick Thoer 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).

  • Formylation process for producing aldehydes
    Patent number: 4755613
    Abstract: The invention relates to a process for preparing aromatic or hetero-aromatic aldehydes by the Reimer-Tiemann formylation reaction. The process comprises employing a solid alkaline hydroxide in order to carry out the reaction in a solid/liquid medium and by adjusting the initial hydration rate of the medium to be higher than 0.05 moles of water per mole of initial compound and less than 1.5 moles of water per mole of alkaline hydroxide initially in the medium. Such a process makes it possible to substantially increase the yield of the Reimer-Tiemann reaction and to avoid tar formation entirely or in large part.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: July 5, 1988
    Assignee: Institut National Polytechnique
    Inventors: Annick Thoer, Ghislain Denis, Michel Delmas, Antoine Gaset