Patents by Inventor Jurgen Eckstein

Jurgen Eckstein 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).

  • Reaction of carbonyl compounds with organometallic reagents
    Publication number: 20030004357
    Abstract: The invention relates to a novel method for carrying out reactions of carbonyl compounds with organometallic reagents, especially grignard reagents. The inventive method is characterised in that the organometallic reagent and the carbonyl compound are provided and tempered separately in a suitable solvent before being pumped into a tempered mini/micromixer.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 2, 2003
    Inventors: Ulrich Koop, Holger Krummradt, Michael Schwarz, Joran Stoldt, Jurgen Eckstein, Stefan Zehner, Wolfgang Melichar
  • Preparation of a D-(+)-biotin intermediate
    Patent number: 5847152
    Abstract: The present invention relates to an improved process for making heterocyclic compounds suitable for intermediate products for making D-(+)-biotin and a process for making D-(+)-biotin itself.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: December 8, 1998
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Jurgen Eckstein, Thomas Koppe, Michael Schwarz, Michael Casutt
  • Process for the preparation of a D-(+)-biotin intermediate
    Patent number: 5235065
    Abstract: The present invention relates to a process for the preparation of heterocyclic compounds which are suitable as intermediates for the preparation of D-(+)-biotin, and to a process for the preparation of D-(+)-biotin itself. The invention further relates to intermediates in this process.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: August 10, 1993
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Michael Schwarz, Michael Casutt, Jurgen Eckstein