Patents by Inventor Karl-Heinz Robschlager

Karl-Heinz Robschlager 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 preparing normally liquid oxygenate and hydrocarbonaceous products from a hydrocarbon feed containing linear- and branched olefins
    Patent number: 5023389
    Abstract: The invention relates to a process for preparing normally liquid hydrocarbon products such as middle distillates and methyl-t-butylether from a hydrocarbon feed containing linear and branched olefins (e.g. propane and butenes in light ends) comprising at least the following steps:i) selectively converting branched olefins in the feed in the presence of a catalyst into a normally liquid hydrocarbonaceous product (e.g. MTBE);ii) separating linear olefins from product obtained in step (i), andiii) catalytically oligomerizing linear olefins obtained from step (ii) into liquid hydrocarbons such as middle distillates.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: June 11, 1991
    Assignee: Shell Oil Company
    Inventors: Pierre Grandvallet, Andras G. T. G. Kortbeek, Johannes P. Van Den Berg, Karl-Heinz Robschlager