Patents by Inventor Ruth A. Stadler

Ruth A. Stadler 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 a titanium-bearing material and upgrading ilmenite to synthetic rutile with sulfur trioxide
    Patent number: 4120694
    Abstract: A process for removing impurities from an oxide of titanium-bearing material such as a titania slag by treating the material with SO.sub.3 gas and subsequently leaching with a liquid. In particular a process for upgrading an ilmenite ore by preparing a titania slag therefrom and purifying the slag such that it may be used as a synthetic rutile suitable for use in a fluidized-bed chlorination reactor to produce titanium tetrachloride which can be reoxidized to TiO.sub.2.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: October 17, 1978
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventors: Gerald W. Elger, Ruth A. Stadler, Philip E. Sanker