Patents by Inventor Premo Chiotti

Premo Chiotti 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).

  • Method of preparing silicon from sodium fluosilicate
    Patent number: 4446120
    Abstract: A process for preparing high purity silicon metal from Na.sub.2 SiF.sub.6 (sodium fluosilicate). The sodium fluosilicate is heated to decomposition temperature to form NaF, which retains most of the impurities, and gaseous SiF.sub.4. The SiF.sub.4 is then reduced by the bomb reduction method using a reductant having a low packing density.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: May 1, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Frederick A. Schmidt, David Rehbein, Premo Chiotti
  • Separation of uranium from (Th,U)O.sub.2 solid solutions
    Patent number: 3982928
    Abstract: Uranium is separated from mixed oxides of thorium and uranium by a pyrometallurgical process in which the oxides are mixed with a molten chloride salt containing thorium tetrachloride and thorium metal which reduces the uranium oxide to uranium metal which can then be recovered from the molten salt. The process is particularly useful for the recovery of uranium from generally insoluble high-density sol-gel thoria-urania nuclear reactor fuel pellets.
    Type: Grant
    Filed: January 3, 1975
    Date of Patent: September 28, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Premo Chiotti, Mahesh Chandra Jha