Patents by Inventor Alexander Schiedt

Alexander Schiedt 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).

  • Amorphous caesium aluminum fluoride complex, its production and use
    Patent number: 9498853
    Abstract: The present invention provides an amorphous caesium aluminum fluoride complex, a process for its production and the use of the complex as a flux, in particular for the soft soldering of aluminum.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: November 22, 2016
    Inventors: Gerd J. Harms, Hartmut Hofmann, Klaus-Peter Lehmann, Alexander Schiedt
  • AMORPHOUS CAESIUM ALUMINUM FLUORIDE COMPLEX, ITS PRODUCTION AND USE
    Publication number: 20090032573
    Abstract: The present invention provides an amorphous caesium aluminium fluoride complex, a process for its production and the use of the complex as a flux, in particular for the soft soldering of aluminium.
    Type: Application
    Filed: December 20, 2006
    Publication date: February 5, 2009
    Inventors: Gerd J. Harms, Hartmut Hofmann, Klaus-Peter Lehmann, Alexander Schiedt
  • Methods for Producing Cesium Hydroxide Solutions
    Publication number: 20080166281
    Abstract: Methods for producing cesium hydroxide solutions during which: cesium-containing ore is disintegrated with sulfuric acid while forming a cesium aluminum sulfate hydrate, which is poorly soluble at low temperatures; the formed cesium alum is separated away in the form of a solution from the solid ore residues; the aluminum is precipitated out of the cesium alum solution while forming a cesium sulfate solution; the formed cesium sulfate solution is reacted with barium hydroxide or stontium hydroxide while forming a cesium hydroxide solution, and; the formed cesium hydroxide solution is concentrated and purified.
    Type: Application
    Filed: January 25, 2006
    Publication date: July 10, 2008
    Inventors: Gerd J. Harms, Alexander Schiedt, Manfred Bick, Wolfgang Hildebrandt
  • Process of preparing cesium salts from cesium aluminum alum
    Patent number: 5605669
    Abstract: This invention relates to the preparation of cesium salts from cesium-aluminum-alum in a process in which the cesium-aluminum-alum is reacted in a single vessel in the presence of water with calcium hydroxide in an amount which is equimolar to the amount of aluminum and with a readily water-soluble calcium salt in an amount which is equimolar to the amount of cesium and the precipitated aluminum hydroxide and the precipitated calcium sulfate are separated by filtration or centrifugation.
    Type: Grant
    Filed: November 24, 1995
    Date of Patent: February 25, 1997
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Hartmut Hofmann, Klaus K obele, Horst Prinz, Bernd Phillipp, Gerd Harms, Alexander Schiedt, Ulrike Hecktor