Patents by Inventor Aher Vitner

Aher Vitner 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 for preparing aspartic acid from ammonium aspartate, and continuous process for preparing polysuccinimide involving such process
    Patent number: 6274698
    Abstract: The invention relates to a process for the preparation of aspartic: acid by decomposition of ammonium aspartate wherein a concentrated aqueous solution of ammonium aspartate is continuously introduced into a diluent in which water has a low solubility, which diluent is maintained at a temperature at which ammonium aspartate decomposes into aspartic acid and ammonia, and wherein the water and the formed ammonia are continuously removed. The invention also relates to a process for preparing polysuccinimide starting from fumaric acid or maleic acid and ammonia involving said process for preparing aspartic acid from ammonium aspartate.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: August 14, 2001
    Assignee: Amylum Europe N.V.
    Inventors: Pierre Cami, Didier Lecomte, Aharon Eyal, Aher Vitner