Patents by Inventor Bronwyn Graeffe

Bronwyn Graeffe 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).

  • SYSTEMS AND PROCESSES FOR PRODUCING AMMONIUM SULFATE FROM WASTE STREAMS
    Publication number: 20240190713
    Abstract: Systems and processes for producing ammonium sulfate that include providing an industrial waste material that includes at least lead sulfate and sulfuric acid. Ammonium hydroxide is added to the industrial waste material to raise the pH thereof and react the sulfuric acid to produce ammonium sulfate, and the lead sulfate is reacted with ammonium carbonate to produce lead carbonate.
    Type: Application
    Filed: May 3, 2023
    Publication date: June 13, 2024
    Inventors: Michael Hammer, Bronwyn Graeffe
  • SYSTEMS AND PROCESSES FOR PRODUCING POTASSIUM SULFATE, BARIUM SULFATE, AND/OR CHLORIDE SALTS FROM WASTE STREAMS
    Publication number: 20210107813
    Abstract: Systems and processes for producing potassium sulfate that include providing an industrial waste material that includes at least sodium sulfate, reacting the sodium sulfate with potassium chloride to produce a byproduct comprising potassium sulfate and a chloride-containing brine, and reacting the chloride-containing brine with barium chloride to produce barium sulfate and sodium chloride.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 15, 2021
    Inventors: Michael Lyn Mengel, Michael Tom Hammer, Barry Wayne Stolzman, Bronwyn Graeffe