Patents by Inventor Walter Pleyer

Walter Pleyer 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 for the preparation of lithium aluminium hydride solutions
    Patent number: 6994838
    Abstract: A process is described for the preparation of LiAlH4 solutions, in which lithium hydride reacts with an aluminium halide in diethyl ether to give lithium aluminium hydride, the lithium halide which arises is separated off, and wherein a solvent the complexing energy of which with LiAlH4 is greater than the complexing energy of diethyl ether with LiAlH4 is then added, and the diethyl ether is removed by distillation.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: February 7, 2006
    Assignee: Chemetall GmbH
    Inventors: Dirk Dawidowski, Bernhard Debbeler, Ute Emmel, Walter Pleyer, Wilfried Weiss
  • Process for the preparation of lithium aluminium hydride solutions
    Publication number: 20040136900
    Abstract: A process is described for the preparation of LiAlH4 solutions, in which lithium hydride reacts with an aluminium halide in diethyl ether to give lithium aluminium hydride, the lithium halide which arises is separated off, and wherein a solvent the complexing energy of which with LiAlH4 is greater than the complexing energy of diethyl ether with LiAlH4 is then added, and the diethyl ether is removed by distillation.
    Type: Application
    Filed: July 25, 2003
    Publication date: July 15, 2004
    Inventors: Dirk Dawidowski, Bernhard Debbeler, Ute Emmel, Walter Pleyer, Wilfried Weiss