Patents by Inventor Gerardus L. B. Thielemans

Gerardus L. B. Thielemans 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).

  • Patent number: 5262044
    Abstract: A process for upgrading a hydrocarbonaceous feedstock which process included separating the feedstock in the presence of hydrogen at elevated temperature and a partial hydrogen pressure greater than 50 bar into a high boiling fraction and a low boiling fraction and subjecting at least part of the low boiling fraction substantially boiling in the gasoline range to a hydrotreating step under substantially the same conditions as prevailing in the separation step, and recovering from the hydrotreating step a product substantially boiling in the gasoline range and being of improved quality.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: November 16, 1993
    Assignee: Shell Oil Company
    Inventors: Tom Huizinga, Gerardus L. B. Thielemans