Patents by Inventor Holger Luesgen

Holger Luesgen 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 producing brominated butyl rubber
    Patent number: 9657158
    Abstract: The invention relates to an energy efficient, environmentally favorable process for the preparation of brominated butyl rubbers, that uses a bromination agent and a oxidizing agent in order to enhance the utilization of bromine contained in the bromination agent. In a preferred embodiment a common medium for both solution polymerization and subsequent bromination of the rubber is employed.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: May 23, 2017
    Assignee: ARLANXEO Deutschland GmbH
    Inventors: Ricarda Leiberich, Joachim Ritter, Hanns-Ingolf Paul, Udo Wiesner, Holger Luesgen
  • PROCESS FOR PRODUCING BROMINATED BUTYL RUBBER
    Publication number: 20150329700
    Abstract: The invention relates to an energy efficient, environmentally favourable process for the preparation of brominated butyl rubbers, that uses a bromination agent and a oxidizing agent in order to enhance the utilization of bromine contained in the bromination agent. In a preferred embodiment a common medium for both solution polymerization and subsequent bromination of the rubber is employed.
    Type: Application
    Filed: July 28, 2015
    Publication date: November 19, 2015
    Inventors: Ricarda LEIBERICH, Joachim RITTER, Hanns-Ingolf PAUL, Udo WIESNER, Holger LUESGEN
  • Process for producing brominated butyl rubber
    Patent number: 9127137
    Abstract: The invention relates to an energy efficient, environmentally favorable process for the preparation of brominated butyl rubbers, that uses a bromination agent and a oxidizing agent in order to enhance the utilization of bromine contained in the bromination agent. In a preferred embodiment a common medium for both solution polymerization and subsequent bromination of the rubber is employed.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: September 8, 2015
    Assignee: LANXESS INTERNATIONAL SA
    Inventors: Ricarda Leiberich, Joachim Ritter, Hanns-Ingolf Paul, Udo Wiesner, Holger Luesgen
  • PROCESS FOR PRODUCING BROMINATED BUTYL RUBBER
    Publication number: 20140309362
    Abstract: The invention relates to an energy efficient, environmentally favourable process for the preparation of brominated butyl rubbers, that uses a bromination agent and a oxidizing agent in order to enhance the utilization of bromine contained in the bromination agent. In a preferred embodiment a common medium for both solution polymerization and subsequent bromination of the rubber is employed.
    Type: Application
    Filed: July 17, 2012
    Publication date: October 16, 2014
    Applicant: LANXESS INTERNATIONAL SA
    Inventors: Ricarda Leiberich, Joachim Ritter, Hanns-Ingolf Paul, Udo Wiesner, Holger Luesgen