Patents by Inventor Walterus J. Van Lith

Walterus J. Van Lith 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).

  • Removing hydrogen sulphide from a gas mixture
    Patent number: 4959086
    Abstract: A process for removing hydrogen sulphide from a gas mixture including hydrogen sulphide comprising contacting the gas mixture with a liquid absorbent composition including an aminopyridine, such as 4-dimethylaminopyridine.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: September 25, 1990
    Assignee: Shell Oil Company
    Inventors: Johannes F. Van Baar, Walterus J. Van Lith