Patents by Inventor Umedray L. Sheth

Umedray L. Sheth 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 producing columbium oxyfluoride
    Patent number: 4592904
    Abstract: A process for the recovery of columbium values from a columbium-containing aqueous hydrofluoric acid solution. The columbium-containing solution is heated, with agitation, to cause evaporation and hydrolysis, resulting in the formation of a slurry from which columbium oxyfluoride can be separated and recovered.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: June 3, 1986
    Assignee: Cabot Corporation
    Inventors: Edwin J. Bielecki, C. Edward Mosheim, Umedray L. Sheth