Patents by Inventor Stephan Laue

Stephan Laue 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 polycarbonate according to the phase interface method
    Patent number: 9771451
    Abstract: The invention relates to an efficient continuous method for producing polycarbonates according to the phase interface method.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: September 26, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Hermann Kauth, Stephan Laue, Jan Heijl, Rolf Bachmann, Franky Bruynseels, Maarten De Bock, Johan Vanden Eynde, Somchai Kanjanasantisak
  • METHOD FOR PRODUCING POLYCARBONATE ACCORDING TO THE PHASE INTERFACE METHOD
    Publication number: 20160326315
    Abstract: The invention relates to an efficient continuous method for producing polycarbonates according to the phase interface method.
    Type: Application
    Filed: January 21, 2015
    Publication date: November 10, 2016
    Inventors: Hermann KAUTH, Stephan LAUE, Jan HEIJL, Rolf BACHMANN, Franky BRUYNSEELS, Maarten DE BOCK, Johan VANDEN EYNDE, Somchai KANJANASANTISAK
  • Process and apparatus for the preparation of polycarbonate
    Patent number: 8394912
    Abstract: The invention relates to a process for the pretreatment of material surfaces in order to minimize the interaction between polycarbonate and metal and, in the processing and synthesis of polycarbonate, to obtain a high-quality polymer which in particular does not become discolored and is free of insoluble constituents.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: March 12, 2013
    Assignee: Bayer MaterialScience AG
    Inventors: Frank Doebert, Andreas Stremmel, Christoph Biedron, Stephan Laue, Johann Rechner, Torsten Hagen, Frank Bruynseels, Frank Quaeyhaegens, Johan Decloedt, Paul Van Dorst, Uwe Arndt, Johan Vanden Eynde, Ursula Tracht, Thomas König, Ulrich Liesenfelder
  • PROCESS AND APPARATUS FOR THE PREPARATION OF POLYCARBONATE
    Publication number: 20110184144
    Abstract: The invention relates to a process for the pretreatment of material surfaces in order to minimize the interaction between polycarbonate and metal and, in the processing and synthesis of polycarbonate, to obtain a high-quality polymer which in particular does not become discoloured and is free of insoluble constituents.
    Type: Application
    Filed: December 20, 2010
    Publication date: July 28, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Frank Doebert, Andreas Stremmel, Christoph Biedron, Stephan Laue, Johann Rechner, Torsten Hagen, Frank Bruynseels, Frank Quaeyhaegens, Johan Decloedt, Paul Van Dorst, Uwe Arndt, Johan Vanden Eynde, Ursula Tracht, Thomas König, Ulrich Liesenfelder
  • METHOD AND DEVICE FOR PRODUCING AROMATIC AMINES BY HETEROGENEOUS CATALYZED HYDRATION
    Publication number: 20090093655
    Abstract: The present invention relates to a process and an apparatus for preparing aromatic amines by means of a heterogeneously catalysed hydrogenation, wherein the catalyst required for the reaction is applied to the interior wall of one or more reaction channels which are cooled from the outside.
    Type: Application
    Filed: March 1, 2007
    Publication date: April 9, 2009
    Applicant: BAYER TECHNOLOGY SERVICES GMBH
    Inventors: Stephan Schubert, Ralph Schellen, Leslaw Mleczko, Stephan Laue, Peter Lehner
  • Method for operating a radiocommunication system
    Publication number: 20070110007
    Abstract: A radiocommunication system has a downward link radio channel associated with each upward link radio channel, respectively. A subscriber station receives data from a radio station on a network side to the downward link radio channel, with no logic liaison being established between the subscriber station and the radio station on the network side. A message is sent by the subscriber station on the upward link radio channel associated with the downward link radio channel. Said message is emitted by the radio station on the network side via the downward link radio station.
    Type: Application
    Filed: March 31, 2004
    Publication date: May 17, 2007
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Patricia Bertram, Christina Gessner, Christian Klaussner, Stephan Laue
  • Use of molecular weight-enlarged catalysts in a process for asymmetric, continous hydrogenation, novel molecular weight-enlarged ligands and catalysts
    Patent number: 6759559
    Abstract: The first embodiment of the present invention provides a process, which includes: in a continuous process in a membrane reactor, asymmetrically hydrogenating at least one C═C, C═N or C═O double bond with a catalyst. Another embodiment of the present invention provides a ligand, which includes at least one di-1,3-aminophosphine homochiral active center; optionally, a linker; and a molecular weight-enlarging polymer; wherein the active center is bound to the molecular weight-enlarging polymer through the linker or is bound directly to the molecular weight-enlarging polymer; and wherein the linker is defined in the claims. Another embodiment of the present invention provides a process for preparing the above-noted ligand, and a catalyst that includes the above-noted ligand.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: July 6, 2004
    Assignees: Degussa AG, Forschungszentrum Juelich GmbH
    Inventors: Stephan Laue, Andreas Liese, Christian Wandrey, Olaf Burkhardt, Jens Woeltinger, Andreas Bommarius, Hans Henniges, Jean-Louis Philippe, Andreas Karau, Karlheinz Drauz
  • Use of molecular weight-enlarged catalysts in a process for asymmetric, continous hydrogenation, novel molecular weight-enlarged ligands and catalysts
    Publication number: 20020016513
    Abstract: The first embodiment of the present invention provides a process, which includes:
    Type: Application
    Filed: January 24, 2001
    Publication date: February 7, 2002
    Applicant: Degussa-Huels Aktiengesellschaft
    Inventors: Stephan Laue, Andreas Liese, Christian Wandrey, Olaf Burkhardt, Jens Woeltinger, Andreas Bommarius, Karlheinz Drauz, Jean-Louis Philippe, Hans Henniges, Adreas Karau