Patents by Inventor Andreas Pepels

Andreas Pepels 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 1,2-diaminocyclohexane-platinum(II) complexes
    Patent number: 7309796
    Abstract: A process for the preparation of diaminocyclohexane-platinum(II)-dicarboxylates has the following steps: B Conversion of K2PtX2 with 1,2-diaminocyclohexane (DACH) to (2): C Conversion of (2) with too little quantity of silver salt AgnA to (3): and removal of the resulting AgX precipitate. D Conversion of (3) with a dicarboxylate to (1): F Isolation of the product (1), wherein R1 and R2 together form a dicarboxylato group, X stands for Cl or I, A for a 1-2-valent anion of a mineral acid, and n stands for 1 or 2.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: December 18, 2007
    Assignee: W.C. Heraeus GmbH
    Inventors: Andreas Pepels, Holger Rauter, Ralf-Dieter Schnebeck, Friedrich Wissmann
  • Process for the preparation of 1,2-diaminocyclohexane-platinum(II) complexes
    Publication number: 20050197389
    Abstract: A process for the preparation of diaminocyclohexane-platinum(II)-dicarboxylates has the following steps: B Conversion of K2PtX2 with 1,2-diaminocyclohexane (DACH) to (2): C Conversion of (2) with too little quantity of silver salt AgnA to (3): and removal of the resulting AgX precipitate. D Conversion of (3) with a dicarboxylate to (1): F Isolation of the product (1), wherein R1 and R2 together form a dicarboxylato group, X stands for Cl or I, A for a 1-2-valent anion of a mineral acid, and n stands for 1 or 2.
    Type: Application
    Filed: February 3, 2005
    Publication date: September 8, 2005
    Applicant: W.C. Heraeus GmbH
    Inventors: Andreas Pepels, Holger Rauter, Ralf-Dieter Schnebeck, Friedrich Wissmann