Patents by Inventor Robert D. Sandage

Robert D. Sandage 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 preparing a composition using argentation chromatography
    Patent number: 8088710
    Abstract: The present invention is directed to a method of preparing compositions enriched in compounds containing carbon chains of varying degrees of unsaturation using argentation chromatography. The present method utilizes an argentized cationic resin or a conditioned argentized alumina to separate compounds containing saturated or mono-unsaturated carbon chains from compounds having polyunsaturated carbon chains present in a starting composition. The invention is particularly useful for preparing a composition enriched in polyunsaturated fatty acid alkyl esters from mixtures of fatty acid esters in a starting composition derived from vegetable oils. The present invention is also directed to a method of preparing a conditioned argentized alumina adsorbent having increased selectivity for compounds containing one or more polyunsaturated carbon chains.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: January 3, 2012
    Assignee: Archer Daniels Midland Company
    Inventors: Thomas P. Binder, Doug Geier, Ahmad K. Hilaly, Robert D. Sandage, John G. Soper