Patents by Inventor Karin Amacker

Karin Amacker 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 the preparation of 2,4-pyridine dicarboxylic acid
    Patent number: 5614636
    Abstract: A process for the preparation of carboxamides of nitrogen-containing aromatic heterocyclic compounds from the corresponding N-heterocyclic compounds by reaction thereof with formamide in the presence of peroxodisulfuric acid or a peroxodisulfate.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: March 25, 1997
    Assignee: Lonza Ltd.
    Inventors: Jean-Paul Roduit, Alain Wellig, Karin Amacker, Martin Eyer