Patents by Inventor Bob Scheffer

Bob Scheffer 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 hydrocarbons from carbon monoxide and hydrogen
    Patent number: 6479557
    Abstract: A process for the preparation of at least two organic products from a synthesis gas by (i) converting a first synthesis gas feed to a first organic product and a first by-product; (ii) converting a second synthesis gas feed to a second organic product and a second by-product; (iii) separating the first and/or second by-product from, respectively, the first and/or second organic product, and (iv) mixing the separated first and/or second by-product with, respectively, the second and/or first organic product. Preferably, the first organic product is paraffinic hydrocarbons or oxygenates and the second organic product is olefinic hydrocarbons or oxygenates.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: November 12, 2002
    Assignee: Shell Oil Company
    Inventors: Jean-Paul Lange, Ian Ernest Maxwell, Bob Scheffer
  • Process for improving lubricating base oil quality
    Patent number: 5554307
    Abstract: A process for improving the quality of lubricating base oils, which process comprises contacting a lubricating base oil with dry activated carbon.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: September 10, 1996
    Assignee: Shell Oil Company
    Inventors: Daniel N. N. Dagorn, Taous G. Mahtout, Pierre Grandvallet, Bob Scheffer
  • Process for the preparation of hydrocarbons
    Patent number: 5073661
    Abstract: The invention relates to a process for the preparation of hydrocarbons, wherein a feed comprising methanol is contacted at reaction conditions with a catalyst comprising:(i) a porous carrier material selected from the group comprising silica, alumina, and mixtures thereof;(ii) cobalt as a metal component deposited on the porous carrier material; and(iii) a promoter selected from the group comprising zirconium, titanium, chromium, ruthenium, iron, magnesium, zinc, thorium and uranium.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: December 17, 1991
    Assignee: Shell Oil Company
    Inventors: Bob Scheffer, Andras G. T. G. Kortbeek