Patents by Inventor Joseph L. Waldman

Joseph L. Waldman 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 manufacturing a stable titanyl sulfate solution
    Patent number: 4275041
    Abstract: A process is provided for the manufacture of a stable titanyl sulfate solution by diluting a reaction mixture containing iron sulfate and titanyl sulfate with a material selected from water, a titanyl sulfate solution, and mixtures thereof. The titanyl sulfate solution may be recovered or processed to provide titanium dioxide hydrate which may be calcined to provide titanium dioxide pigment.
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: June 23, 1981
    Assignee: NL Industries, Inc.
    Inventors: Joseph L. Waldman, Edgar Klein, Achim Kulling, Joseph A. Rahm