Patents by Inventor Helmut Flor

Helmut Flor 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).

  • High purity potassium tetrafluoroaluminate and method of making same
    Patent number: 5242669
    Abstract: An improved method of making high quality potassium tetrafluoroaluminate. Hydrofluoric acid is added to high purity aluminum metal powder to form aluminum fluoride in solution. Nitric acid is added to this solution whereby impurities in the solution dissolve into the nitric acid. Water is then added to the solution to precipitate from the solution solid aluminum fluoride with impurities removed therefrom. The aluminum fluoride is then milled in the presence of hydrofluoric acid and potassium hydroxide whereby the exposure thereto produces the high quality potassium tetrafluoroaluminate which may then be washed and dried.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: September 7, 1993
    Assignee: The S. A. Day Mfg. Co., Inc.
    Inventor: Helmut Flor