Patents by Inventor Norbert Dirsch

Norbert Dirsch 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 and device for the production of phosgene from diphosgene and/or triphosgene
    Patent number: 6399822
    Abstract: The invention concerns a method for preparing phosgene from diphosgene and/or triphosgene, by reaction on a catalyst comprising one or several compounds with one or several nitrogen atoms with a pair of deactivated electrons. The invention further concerns a device for preparing phosgene from diphosgene and/or triphosgene, for implementing said method.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: June 4, 2002
    Assignee: Dr. Eckert GmbH
    Inventors: Heiner Eckert, Bernhard Gruber, Norbert Dirsch