Patents by Inventor Sandra R. Wootton

Sandra R. Wootton 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).

  • Method of improving handling characteristics of froth of elemental sulfur particles
    Patent number: 5071633
    Abstract: To improve the handling characteristics and dispersibility of a sulfur containing froth, especially a froth obtained from the regeneration step in a process for scrubbing out and oxidizing H.sub.2 S, there is added to the scrubbing liquor an ionic or non-ionic surfactant, e.g., dioctyl or dodecyl sulfosucciniate in sufficient concentrations, e.g., 3-16 ppm, to substantially prevent the sulfur particles from becoming crusty and stiff, this technique being particularly applicable to the replacement of diethanolamine.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: December 10, 1991
    Assignee: Linde Aktiengesellschaft
    Inventors: Robert de Haan, Horst J. F. A. Hesse, Sonet Vermaire, Sandra R. Wootton