Patents by Inventor Günther Rosenthal

Günther Rosenthal 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).

  • Patent number: 8030519
    Abstract: Acetoacetic acid arylamides are continuously produced from diketene and primary or secondary aromatic amines under the conditions of a reactive distillation in the presence of water. The continuous method provides a high purity of the products, nearly quantitative yields and a high rate of throughput.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: October 4, 2011
    Assignee: Lon za AG
    Inventors: Erich Armbruster, Thuy Quach, Günther Rosenthal, Brian Schwegler