Patents by Inventor Gunther Bierbaumer

Gunther Bierbaumer 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).

  • Preparation of sodium percarbonate
    Patent number: 4146571
    Abstract: Sodium percarbonate is prepared from a reaction mixture of an Mg.sup.++ containing hydrogen peroxide solution, sodium hexametaphosphate and an aqueous sodium carbonate suspension containing sodium chloride and/or sodium sulfate, wherein the initial reaction mixture contains only 3-50%, by weight, of the soda suspension while the remainder of the reactants are added subsequently. The mixture is continuously stirred until the level of peroxide remains constant, and the crystalline percarbonate is then separated.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: March 27, 1979
    Assignee: Treibacher Chemische Werke
    Inventors: Ernst Will, Gunther Bierbaumer