Patents by Inventor Hans-Georg Kaltenberg

Hans-Georg Kaltenberg 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).

  • Arrangement for changing the temperature of fluids which form incrustations
    Patent number: 4144934
    Abstract: A fluid medium is conveyed along a conduit. During its passage through the conduit, the fluid medium undergoes temperature change. The change in temperature of the fluid medium is performed in a step-wise manner by indirect heat-exchange with a fluid flowing countercurrent to the fluid medium, that is, by means of a plurality of heat-exchangers arranged along the conduit. The fluid medium forms incrustations and the rate at which incrustations form is different at different temperatures. This is taken into account by providing for the ratio between the lengths of any two heat-exchangers to approximate the ratio between the rates at which incrustations form at the temperatures of the respective heat-exchangers. Of particular interest is the extraction of bauxite with sodium aluminate lye.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: March 20, 1979
    Assignee: Vereinigte Aluminium-Werke A.G.
    Inventors: Fritz Kampf, Hans-Georg Kaltenberg
  • Method and arrangement for changing the temperature of fluids which form incrustations
    Patent number: 4055218
    Abstract: A fluid medium is conveyed along a conduit. During its passage through the conduit, the fluid medium undergoes temperature change. The change in temperature of the fluid medium is performed in a step-wise manner by indirect heat-exchange with a fluid flowing countercurrent to the fluid medium, that is, by means of a plurality of heat-exchangers arranged along the conduit. The fluid medium forms incrustations and the rate at which incrustations form is different at different temperatures. This is taken into account by providing for the ratio between the lengths of any two heat-exchangers to approximate the ratio between the rates at which incrustations form at the temperatures of the respective heat-exchangers. Of particular interest is the extraction of bauxite with sodium aluminate lye.
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: October 25, 1977
    Assignee: Vereinigte Aluminum-Werke Aktiengesellschaft
    Inventors: Fritz Kampf, Hans-Georg Kaltenberg