Patents by Inventor Georg Messner

Georg Messner 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).

  • Apparatus for the fabrication of pure alumina from Al.sub.2 O.sub.3 and silica containing raw materials by leaching with hydrochloric acid
    Patent number: 4056363
    Abstract: An apparatus for the production of pure alumina from alumina and silicate containing raw materials comprising means to feed said raw material into the top of an acid resistant leaching tower; means to continuously feed a leaching liquor containing hydrochloric acid into the bottom of said leaching tower, means to continuously flow said leaching liquor upward through said raw material to leach out the alumina as a solution of aluminum chloride, means to withdraw said solution enriched in aluminum chloride toward the top of said tower zone; means to withdraw said raw material solid residue from the bottom of said tower zone to convey said solid residue from said leaching tower into a separation zone at a level higher than the level of said leaching tower; and means to separate said solid residue from said carrier liquid in said separation zone.
    Type: Grant
    Filed: February 27, 1976
    Date of Patent: November 1, 1977
    Inventor: Georg Messner
  • Method for the fabrication of pure alumina from Al.sub.2 O.sub.3 and silica containing raw materials by leaching with hydrochloric acid
    Patent number: 3959438
    Abstract: A process for the production of pure alumina from alumina and silicate containing raw materials comprising feeding said raw material into the top of an acid resistant leaching tower; continuously feeding a leaching liquor containing hydrochloric acid into the bottom of said leaching tower, continuously flowing said leaching liquor upward through said raw material to leach out the alumina as a solution of aluminum chloride, withdrawing said solution enriched in aluminum chloride toward the top of said tower zone; withdrawing said raw material solid residue from the bottom of said tower zone to convey said solid residue from said leaching tower into a separation zone at a level higher than the level of said leaching tower; and separating said solid residue from said carrier liquid in said separation zone.Apparatus for producing alumina according to this method includes the corresponding means.
    Type: Grant
    Filed: March 21, 1974
    Date of Patent: May 25, 1976
    Inventor: Georg Messner
  • Apparatus for the production of alkali metal chlorates
    Patent number: 3948748
    Abstract: An apparatus for increasing percentage yield concurrent with increased current efficiency in electrolytic conversion of alkali metal chloride in an electrolyzer into alkali metal chlorate and formation of the chlorate by chemical disproportionation in separate chlorate formation zones, the use of bipolar electrolyzers is preferred but not necessary.
    Type: Grant
    Filed: November 21, 1973
    Date of Patent: April 6, 1976
    Assignee: Oronzio de Nora Impianti Elettrochimici S.p.A.
    Inventors: Georg Messner, Vittorio De Nora