Patents by Inventor William B. De Atley

William B. De Atley 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).

  • Recovery of Cr.sub.2 O.sub.3 from a chromium bearing solution
    Patent number: 4230677
    Abstract: Method for the recovery of high purity Cr.sub.2 O.sub.3 from a Na.sub.2 CrO.sub.4 or Na.sub.2 Cr.sub.2 O.sub.7 solution by producing (NH.sub.4).sub.2 CrO.sub.4 by solvent extraction, evaporating the aqueous (NH.sub.4).sub.2 CrO.sub.4 and igniting the resulting solids to provide high purity Cr.sub.2 O.sub.3.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: October 28, 1980
    Assignee: Union Carbide Corporation
    Inventors: Tadashi J. Kagetsu, William B. De Atley, Joseph S. Fox, Oreste J. Malacarne
  • Processing of chromium ore
    Patent number: 4207295
    Abstract: Method for the recovery of chrome hydrate or high purity Cr.sub.2 O.sub.3 from chromium ores by roasting the ore with Na.sub.2 CO.sub.3 and CaO, water leaching the roasted mass, precipitating aluminum impurities from the leach liquor as Al(OH).sub.3 and contacting the leach liquor with sulfur and NaOH in order to reduce the chromium values in the leach liquor from valence 6 to 3 to provide a chrome hydrate precipitate. The chrome hydrate precipitate is acid repulped to provide a chrome hydrate from which sodium impurities have been removed. The chrome hydrate is dried and the resulting solids are calcined to provide a high purity Cr.sub.2 O.sub.3.
    Type: Grant
    Filed: February 13, 1979
    Date of Patent: June 10, 1980
    Assignee: Union Carbide Corporation
    Inventors: Tadashi J. Kagetsu, William B. De Atley, Joseph S. Fox
  • Oxidation of molten ferrophosphorous
    Patent number: 3998631
    Abstract: Oxidation of ferrophosphorous in an oxidizing environment wherein molten ferrophosphorous is continuously contacted with a surface of oxidized ferrophosphorous.
    Type: Grant
    Filed: April 17, 1975
    Date of Patent: December 21, 1976
    Assignee: Union Carbide Corporation
    Inventors: Donald J. Hansen, William B. De Atley, Robert L. Ripley, George F. Curtis