Patents by Inventor Slyvain S. Hantzer

Slyvain S. Hantzer 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).

  • Hydroprocessing using bulk group VIII/group vib catalysts
    Patent number: 6758963
    Abstract: A process for preparing a lubricating oil basestock containing at least about 90% saturates. The process employs a bulk catalyst comprising at least one non-noble Group VIII metal and two Group VIB metals and wherein said metal catalyst further comprises a non-noble Group VIII molybdate in which at least a portion but less than all of molybdenum is replaced by tungsten.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: July 6, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Slyvain S. Hantzer, Kenneth Lloyd Riley