Patents by Inventor Roel Prins

Roel Prins 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 the preparation of nitrobenzene
    Patent number: 5334781
    Abstract: The invention concerns a process for the preparation of nitrobenzene from benzene and nitric acid, wherein catalysts are applied based on the zeolite clinoptilolite.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: August 2, 1994
    Assignee: CU Chemie Uetikon AG
    Inventors: Herman W. Kouwenhoven, Leopoldo Bertea, Roel Prins
  • Process for the preparation of nitrobenzene
    Patent number: 5324872
    Abstract: The invention concerns a gasphase process for the preparation of nitrobenzene from benzene and nitric acid, wherein catalysts are applied based on the zeolite mordenite.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: June 28, 1994
    Assignee: CU Chemie Uetikon AG
    Inventors: Herman W. Kouwenhoven, Leopoldo Bertea, Roel Prins