Patents by Inventor Grzegorz Ziomek

Grzegorz Ziomek 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 regeneration of hydrogenation catalysts
    Patent number: 11918989
    Abstract: The invention provides a process for regenerating a catalyst used for the hydrogenation of an aromatic species, consisting of several steps. First the system is purged with nitrogen, then air is metered in stepwise, and the addition of nitrogen is subsequently ended until only air is present.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: March 5, 2024
    Assignee: Evonik Operations GmbH
    Inventors: Johan Anton, Michael Grass, Johannes Kraft, Thomas Schneider, Grzegorz Ziomek
  • PROCESS FOR REGENERATION OF HYDROGENATION CATALYSTS
    Publication number: 20220193653
    Abstract: The invention provides a process for regenerating a catalyst used for the hydrogenation of an aromatic species, consisting of several steps. First the system is purged with nitrogen, then air is metered in stepwise, and the addition of nitrogen is subsequently ended until only air is present.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 23, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Johan Anton, Michael Grass, Johannes Kraft, Thomas Schneider, Grzegorz Ziomek