Patents by Inventor D. L. Holtermann

D. L. Holtermann 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).

  • Zeolite SSZ-24
    Patent number: 4936977
    Abstract: A crystalline zeolite SSZ-24 is prepared using an adamantane quaternary ion as a template.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: June 26, 1990
    Assignee: Chevron Research Company
    Inventors: Stacey I. Zones, D. L. Holtermann, D. S. Santilli, J. N. Ziemer