Patents by Inventor Carlos L. Aguilar

Carlos L. Aguilar 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).

  • Process for purifying zirconium tetrachloride
    Patent number: 5437854
    Abstract: Zirconium tetrachloride containing hafnium tetrachloride is selectively reduced with liquid metallic tin to produce zirconium trichloride. The hafnium tetrachloride is then separated as a vapor from a slurry of zirconium trichloride and other solids, including stannous dichloride, in liquid metallic tin.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: August 1, 1995
    Assignee: Westinghouse Electric Corporation
    Inventors: Roy G. Walker, Carlos L. Aguilar
  • Process of precipitating zirconium or hafnium from spent pickling solutions
    Patent number: 5076884
    Abstract: A spent pickling solution containing a relatively small percentage of hydrofluoric acid and used for pickling zirconium or hafnium so as to be saturated with zirconium or hafnium fluoride, is treated by the addition thereto of sodium sulfate, Na.sub.2 SO.sub.4, to precipitate sodium zirconium or hafnium fluoride. The remaining solution is recycled for further pickling use, and may have fluoride concentration increased by the addition of calcium fluoride thereto resulting in the precipitation of calcium sulfate.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: December 31, 1991
    Assignee: Westinghouse Electric Corp.
    Inventors: Carlos L. Aguilar, Roy G. Walker