Patents by Inventor Jurgen Bodo Widmer

Jurgen Bodo Widmer 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 iridium acetate
    Patent number: 7951969
    Abstract: The present invention relates to a process for the preparation of indium acetate comprising the steps: (a) reacting an indium compound with an alkaline compound in a protic solvent to obtain an iridium containing precipitate, where the reaction is conducted in the presence of at least one component (i) selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, (b) reacting the precipitate in the presence of at least (i) one compound selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, and (ii) CH3CO2H and/or CH3(CO)O(CO)CH3 to give an iridium acetate containing solution. The invention also relates to indium acetate having a low halide content, to an indium containing precipitate and to uses of the iridium containing precipitate of the present invention and the iridium acetate of the present invention.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: May 31, 2011
    Assignee: Umicore AG & Co. KG
    Inventors: Ralf Karch, Bernd Kayser, Andreas Rivas-Nass, Jürgen Bodo Widmer, Roland Winde, Eileen Wörner
  • Process for the Preparation of Iridium Acetate
    Publication number: 20100234628
    Abstract: The present invention relates to a process for the preparation of indium acetate comprising the steps: (a) reacting an indium compound with an alkaline compound in a protic solvent to obtain an iridium containing precipitate, where the reaction is conducted in the presence of at least one component (i) selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, (b) reacting the precipitate in the presence of at least (i) one compound selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, and (ii) CH3CO2H and/or CH3(CO)O(CO)CH3 to give an iridium acetate containing solution. The invention also relates to indium acetate having a low halide content, to an indium containing precipitate and to uses of the iridium containing precipitate of the present invention and the iridium acetate of the present invention.
    Type: Application
    Filed: May 24, 2006
    Publication date: September 16, 2010
    Inventors: Ralf Karch, Bernd Kayser, Andreas Rivas-Nass, Jurgen Bodo Widmer, Roland Winde, Eileen Worner