Patents by Inventor Auke F. de Vries

Auke F. de Vries 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 light hydrocarbon distillates by hydrocracking and catalytic cracking
    Patent number: 4859309
    Abstract: A process is disclosed for the preparation of a light hydrocarbon oil distillate by (1) hydrocracking a vacuum distillate, (2) separating the product of (1) into distillates and a residue, (3) catalytic cracking the residue obtained in (2) and a portion of the vacuum distillate to thereby isolate a light hydrocarbon oil distillate.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: August 22, 1989
    Assignee: Shell Oil Company
    Inventors: Auke F. de Vries, Willem H. J. Stork
  • Process for the preparation of an aromatic hydrocarbon mixture
    Patent number: 4443640
    Abstract: A process is disclosed for the preparation of aromatic hydrocarbon mixtures having high benzene content by contacting non-aromatic organic compounds with certain crystalline non-aluminum silicates having a SiO.sub.2 /Fe.sub.2 O.sub.3 molar ratio of 100-300 and A SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of 135-1900.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: April 17, 1984
    Assignee: Shell Oil Company
    Inventors: Johannes van der Meijden, Auke F. de Vries