Patents by Inventor Mario Kennecke

Mario Kennecke 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 4-androstene-3,17-dione derivatives
    Patent number: 4100026
    Abstract: A process for the preparation of 4-androstene-3,17-dione derivatives of the formula ##STR1## wherein X is 1,2-methylene or 1- or 2-methyl, comprises fermenting a sterol derivative of the formula ##STR2## wherein X is as above, the bond is a single or double bond, and R.sub.1 is the hydrocarbon residue, of 8-10 carbon atoms, of a sterol, with a microorganism culture capable of the side chain degradation of sterols.
    Type: Grant
    Filed: December 17, 1976
    Date of Patent: July 11, 1978
    Assignee: Schering Aktiengesellschaft
    Inventors: Alfred Weber, Mario Kennecke, Rudolf Mueller, Ulrich Eder, Rudolf Wiechert
  • Process for the preparation of androstane-3,17-dione derivatives
    Patent number: 4097334
    Abstract: A process for the preparation of androstane-3,17-dione compounds of the formula ##STR1## wherein X is 1,2-methylene or 1- or 2-methyl, comprises fermenting a sterol of the formula ##STR2## wherein X is as above and R.sub.1 is the hydrocarbon residue of 8-10 carbon atoms, of a sterol, with a microorganism culture capable of effecting the side chain degradation of sterols.
    Type: Grant
    Filed: December 17, 1976
    Date of Patent: June 27, 1978
    Assignee: Schering Aktiengesellschaft
    Inventors: Alfred Weber, Mario Kennecke, Rudolf Mueller, Ulrich Eder, Rudolf Wiechert