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).

  • Method for selectively dissociating cyclic carboxylic acid anhydrides
    Patent number: 6884893
    Abstract: The invention relates to a method for selectively dissociating cyclic carboxylic acid anhydrides. According to the inventive method, a chiral amino alcohol with a tertiary amino group that may have a partially or completely bridged structure is used as the chiral auxiliary reagent.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: April 26, 2005
    Assignee: MERCK Patent GmbH
    Inventors: Michael Schwarz, Jürgen Eckstein
  • 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
  • Ketotricyclo[5.2.1.0]decane derivatives
    Patent number: 6277357
    Abstract: The invention relates to ketotricyclo[5.2.1.0]-decane derivatives of the formula I wherein Phe is a phenyl group which is unsubstituted or substituted by 1 to 5 hydroxyl, alkyl or alkoxy groups having 1 to 10 C atoms, and their preparation and use as UV filters, in particular in cosmetic or pharmaceutical formulations.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: August 21, 2001
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Michael Schwarz, Ingeborg Stein, Ulrich Heywang, Jürgen Eckstein
  • Method and apparatus for the deposition and fixing of a thin metal wire on a thermoplastic film of a glazing of laminated glass
    Patent number: 5891280
    Abstract: Thin resistance wires are deposited in curved form on a thermoplastic film for the manufacture of a car glazing which can be electrically heated. The thermoplastic film is kept by vacuum on the surface of a cylindrical drum having a perforated cylindrical wall. The drum is rotated and the wire deposited and fixed on the film with the aid of a wire deposition apparatus. The wire deposition apparatus is mounted on a carriage able to move parallel to the longitudinal axis of the drum. The carriage is driven by means of a moving screw rotated by a drive motor. The drive motor is controlled by a processor via a regulating amplifier controlled by the processor in accordance with a time-travel program established in accordance with the desired curved shape of the wires.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: April 6, 1999
    Assignee: Saint-Gobain Vitrage
    Inventors: Manfred Gillner, Siegfried Pikhard, Luc Vanaschen, Hans-Jurgen Eckstein
  • 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