Patents by Inventor George Ryals

George Ryals 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).

  • Removal of sulfur-containing impurities from volatile metal hydrides
    Publication number: 20050106090
    Abstract: Method for the purification of a volatile metal hydride comprising obtaining a volatile metal hydride feed containing one or more acidic impurities, one of which is a sulfur-containing impurity; contacting the feed with an alkaline material and reacting at least a portion of the sulfur-containing impurity with the alkaline material to remove a portion of the sulfur-containing impurity from the feed and provide an intermediate purified material; and contacting the intermediate purified product with an adsorbent material to remove at least a portion of the sulfur-containing impurity from the intermediate purified material and provide a purified volatile metal hydride product.
    Type: Application
    Filed: November 19, 2003
    Publication date: May 19, 2005
    Inventors: Rajiv Agarwal, George Ryals, Wei Cao, John Cirucci, Robert Apollo, Daniel McNesby