Patents by Inventor Thuy Quach

Thuy Quach 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).

  • Method for producing acetoacetic acid arylamides
    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
  • Method for Producing Acetoacetic Acid Arylamides
    Publication number: 20090227811
    Abstract: Acetoacetic acid arylamides are produced from deketene 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: Application
    Filed: April 12, 2006
    Publication date: September 10, 2009
    Inventors: Erich Armbruster, Thuy Quach, Gunther Rosenthal, Brian Schwegler