Patents by Inventor James C. Blair

James C. Blair 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).

  • Patent number: 4396423
    Abstract: The object of the invention is to provide a process for the recovery of iron and zinc from steel making flue dust.The process comprises subjecting the flue dust to a carbiding step in a fluid bed in the presence of a reducing agent and a carbon supplying agent to break down the zinc ferrite structure and convert the iron to iron carbide, followed by heating the residue or product of the carbiding step to recover zinc by evaporization.The iron carbide produced may be introduced into a steel making furnace for the production of steel.An alternative procedure is the recovery of iron carbide and zinc by magnetic separation from the gangue after the carbiding step and before separation of zinc from iron carbide.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: August 2, 1983
    Inventors: Frank M. Stephens, Jr., James C. Blair
  • Patent number: 4039324
    Abstract: Copper is recovered from copper salts, e.g. cuprous chloride, by means of a process comprising reducing the copper salts with hydrogen in a fluidized bed in the presence of chemically inert, generally spherical, relatively smooth, non-porous particles in order to restrain sintering of the reduced copper.
    Type: Grant
    Filed: November 14, 1975
    Date of Patent: August 2, 1977
    Assignee: Cyprus Metallurgical Processes Corporation
    Inventors: Frank M. Stephens, Jr., James C. Blair