Patents by Inventor Michel Middendorp

Michel Middendorp 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).

  • Tricyclic compounds
    Patent number: 6268520
    Abstract: Novel tricyclic compounds of formula I as defined in the specification, a process for their preparation and their use for the preparation of optically active or racemic colchicine and thiocolchicine derivatives.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: July 31, 2001
    Assignee: Hoechst Marion Roussel
    Inventors: Francis Brion, Bernadette Chappert, Christian Diolez, Christian Marie, Alain Mazurie, Michel Middendorp, Didier Pronine, Edmond Toromanoff
  • Tricyclic compounds
    Patent number: 5959146
    Abstract: Novel tricyclic compounds of formula I as defined in the specification, a process for their preparation and their use for the preparation of optically active or racemic colchicine and thiocolchicine derivatives.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: September 28, 1999
    Assignee: Hoechst Marion Roussel
    Inventors: Francis Brion, Bernadette Chappert, Christian Diolez, Christian Marie, Alain Mazurie, Michel Middendorp, Didier Pronine, Edmond Toromanoff
  • Tricyclic compounds
    Patent number: 5705704
    Abstract: Novel tricyclic compounds of formula I as defined in the specification, a process for their preparation and their use for the preparation of optically active or racemic colchicine and thiocolchicine derivatives.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: January 6, 1998
    Assignee: Roussel Uclaf
    Inventors: Francis Brion, Bernadette Chappert, Christian Diolez, Christian Marie, Alain Mazurie, Michel Middendorp, Didier Pronine, Edmond Toromanoff