Patents by Inventor Antonius J. van Hengstum

Antonius J. van Hengstum 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 hydrodesulfurization of light hydrocarbon feeds
    Patent number: 5246569
    Abstract: A process for the catalytic hydrodesulfurization of hydrocarbon- containing feeds using a catalyst of a phosphorus component, a cobalt component and a Group VIB metal component on an alumina carrier.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: September 21, 1993
    Assignee: Akzo N.V.
    Inventors: Jacobus J. L. Heinerman, Antonius J. van Hengstum, Menno de Mind
  • Process for the preparation of a resulfided catalyst
    Patent number: 5139990
    Abstract: Ex situ presulfidation of hydrotreating catalysts comprising impregnating the catalysts with an aqueous solution of an organic sulfur compound, e.g. the diammonium salt of 2,5-dimercapto-1,3,4-thiadiazole and 2,2'-dithiodiethanol, followed by drying of the impregnated material. The dried material is activated by contacting it with hydrogen gas at elevated temperature.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: August 18, 1992
    Assignee: Akzo NV
    Inventors: Jan I. de Jong, Ludwig Eisenhuth, Johannes W. F. M. Schoonhoven, Antonius J. van Hengstum