Patents by Inventor Walter Blumrich

Walter Blumrich 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).

  • Process of strengthening dilute phosphoric acid
    Patent number: 4330364
    Abstract: A process for the concentration of dilute phosphoric acid in a phosphoric acid process characterized by a plurality of separate phosphoric acid cycles when the phosphoric acid is concentrated in each cycle by a vacuum evaporation is described wherein the phosphoric acid cycles is heated by indirect heat exchange by heat of formation formed in a sulfuric acid contact process.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: May 18, 1982
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Walter Blumrich, Karl H. Dorr, Hans J. Konig, Ulrich Sander
  • Process of strengthening dilute phosphoric acid
    Patent number: 4276116
    Abstract: A process for the concentration of dilute phosphoric acid in a phosphoric acid process characterized by a plurality of separate phosphoric acid cycles when the phosphoric acid is concentrated in each cycle by a vacuum evaporation is described wherein the phosphoric acid cycles is heated by indirect heat exchange by heat of formation formed in a sulfuric acid contact process.
    Type: Grant
    Filed: May 22, 1979
    Date of Patent: June 30, 1981
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Walter Blumrich, Karl H. Dorr, Hans J. Konig, Ulrich Sander