Patents by Inventor Werner Warth

Werner Warth 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 and purification of thermolabile compounds
    Patent number: 5347020
    Abstract: The invention relates to a new process for the preparation and purification of thermolabile compounds.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: September 13, 1994
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Michael Aigner, Wolfgang Dersch, Dieter Reichert, Horst Schwall, Werner Warth
  • Process for the purification of thermolabile compounds by distillation
    Patent number: 4990222
    Abstract: The invention relates to a new process for the purification, by distillation, of thermolabile compounds wherein a thermolabile compound is introduced into a twin screw extruder which is heated, in at least one zone, to the boiling temperature of the compound. The volatilized compound is drawn off and condensed.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: February 5, 1991
    Assignee: Boehringer Ingelheim KG
    Inventors: Michael Aigner, Wolfgang Dersch, Dieter Reichert, Horst Schwall, Werner Warth