Patents by Inventor John Sydney Hall

John Sydney Hall 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).

  • Sintered high titanium agglomerates
    Patent number: 6149712
    Abstract: A process for increasing the particles size of fines of a titaniferous mineral containing more that 45% by weight of titanium. The process comprises mixing the fines with a binding agent and water to produce an agglomerate. The agglomerate is then dried and sintered.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: November 21, 2000
    Assignee: Commonwealth Scientific & Industrial Research Organisation
    Inventors: John Sydney Hall, Ken George Carey, Michael John Hollitt
  • Agglomeration of alumina material
    Patent number: 5858325
    Abstract: A process for the agglomeration of powder or dust of alumina containing material (herein referred to as "alumina powder"), wherein an aqueous slurry of the alumina powder is formed, the slurry containing a sufficient quantity of an inorganic binder comprising a polymer form of a hydroxy salt of aluminum. The slurry is subjected to a spray drying operation to form agglomerated granules of the alumina powder, and the granules then are calcined at an elevated temperature for their consolidation. The alumina containing material comprises Al.sub.2 O.sub.3.nH.sub.2 O, wherein n is in the range of from 0 to 3.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: January 12, 1999
    Assignees: Commonwealth Scientific and Industrial Organisation, Alcoa of Australia Limited
    Inventors: John Sydney Hall, Barry James Robson, Timothy Raymond Barton