Patents by Inventor Ruediger Stumpf

Ruediger Stumpf 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 benzimidazo[1,2-a] benzimidazoles
    Patent number: 10570136
    Abstract: The present invention relates to process for the preparation of a compound of formula (I), comprising heating a compound of formula (II) in the presence of a catalyst and a base in a solvent at elevated temperature. The compounds of formula (I) can be produced by the process easily, with excellent yield and purity and at low cost.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: February 25, 2020
    Assignee: UDC IRELAND LIMITED
    Inventors: Michiel De Greef, Bernd Peter, Ruediger Stumpf
  • PROCESS FOR THE PREPARATION OF BENZIMIDAZO[1,2-A] BENZIMIDAZOLES
    Publication number: 20180170936
    Abstract: The present invention relates to process for the preparation of a compound of formula (I), comprising heating a compound of formula (II) in the presence of a catalyst and a base in a solvent at elevated temperature. The compounds of formula (I) can be produced by the process easily, with excellent yield and purity and at low cost.
    Type: Application
    Filed: July 26, 2016
    Publication date: June 21, 2018
    Inventors: Michiel De Greef, Bernd Peter, Ruediger Stumpf