Patents by Inventor Harry E. Gardner

Harry E. Gardner 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 vanadium and nickel from petroleum residues
    Patent number: 4816236
    Abstract: A process is provided for the recovery of vanadium and nickel values from petroleum residues and, in particular, from Flexicoke. In the process, Flexicoke is blended with an alkali metal source, such as sodium sulfate or sodium carbonate, and then roasted in an oxygen-containing gas until carbon is removed and a fused mixture is obtained. Thereafter, the vanadium is leached from the mixture with an aqueous solution, and nickel is contained in solids remaining from the leaching.
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: March 28, 1989
    Assignee: U.S. Vanadium Corporation
    Inventor: Harry E. Gardner
  • Process for the production of vanadium carbide
    Patent number: 4594235
    Abstract: A process is provided for the production of vanadyl hydrate including solvent extraction and stripping steps. The vanadyl hydrate is then reacted with carbon to produce vanadium carbide.
    Type: Grant
    Filed: June 19, 1985
    Date of Patent: June 10, 1986
    Assignee: Union Carbide Corporation
    Inventor: Harry E. Gardner
  • Process for the production of vanadyl hydrate
    Patent number: 4540562
    Abstract: A process is provided for the production of vanadyl hydrate including solvent extraction and stripping steps. The vanadyl hydrate is then reacted with carbon to produce vanadium carbide.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: September 10, 1985
    Assignee: Umetco Minerals Corporation
    Inventor: Harry E. Gardner
  • Removal of molybdenum from uranium solutions
    Patent number: 4366126
    Abstract: Molybdenum is removed from a uranium bearing alkaline carbonate leach solution, by adding a compound which provides lead ion to react with the molybdenum present to form insoluble lead molybdate (PbMoO.sub.4) which precipitates from the solution.
    Type: Grant
    Filed: December 14, 1979
    Date of Patent: December 28, 1982
    Assignee: Union Carbide Corporation
    Inventor: Harry E. Gardner