Patents by Inventor Ursula Haupt

Ursula Haupt 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).

  • Method of purifying waste water
    Patent number: 3998730
    Abstract: The dissolution and loss of granular .gamma.-alumina in acidic water conted with the alumina for purification from lignin and its derivatives can be reduced or eliminated by adding to the acidic waste water an aluminum salt of mineral acid. A flocculate of aluminum hydroxide having the impurities adsorbed thereon is formed on the granular aluminum oxide, and is converted to .gamma.-alumina when the granular material is calcined in air for combustion of the organic waste material.
    Type: Grant
    Filed: October 16, 1975
    Date of Patent: December 21, 1976
    Assignee: Feldmuhle Anlagen- und Produktionsgesellschaft mit beschrankter Haftung
    Inventors: Theodor Ploetz, deceased, Ursula Haupt, Edeltraud Solich
  • Method of purifying the waste water of paper mills
    Patent number: 3998731
    Abstract: The biochemical oxygen demand of waste water from paper mills containing nin and other colloidally dispersed organic contaminants is sharply reduced by adsorption of the contaminants from the acidified waste water by granular alumina. The treatment is most effective at pH 2.5 and when the waste water is acidified with hydrochloric acid.
    Type: Grant
    Filed: April 10, 1975
    Date of Patent: December 21, 1976
    Assignee: Feldmuhle Anlagen- und Produktionsgesellschaft mit beschrankter Haftung
    Inventors: Volker Franzen, Theodor Ploetz, Ursula Haupt, Edeltraud Solich