Patents by Inventor Wolfgang Dersch

Wolfgang Dersch 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 an intermediate product of dabigatran etexilate
    Patent number: 8471033
    Abstract: The invention relates to a process for preparing the compound of formula 1 a valuable intermediate product in the synthesis of the pharmaceutical active substance dabigatran etexilate.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: June 25, 2013
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Christian Filser, Wolfgang Dersch, Rainer Hamm, Arndt Hausherr, Gunter Koch, Ulrich Scholz, Georg Zerban
  • METHOD FOR PRODUCING AN INTERMEDIATE PRODUCT OF DABIGATRAN ETEXILATE
    Publication number: 20110118471
    Abstract: The invention relates to a process for preparing the compound of formula 1 a valuable intermediate product in the synthesis of the pharmaceutical active substance dabigatran etexilate.
    Type: Application
    Filed: June 12, 2009
    Publication date: May 19, 2011
    Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBH
    Inventors: Christian Filser, Wolfgang Dersch, Rainer Hamm, Arndt Hausherr, Gunter Koch, Ulrich Scholz, Georg Zerban
  • Process for the preparation of macrocyclic compounds
    Publication number: 20040248779
    Abstract: The invention relates to an improved process for the preparation of a macrocyclic compound of formula I 1
    Type: Application
    Filed: March 30, 2004
    Publication date: December 9, 2004
    Applicant: Boehringer Ingelheim International GmbH
    Inventors: Wolfgang Dersch, Wendelin Samstag
  • 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