Patents by Inventor Markus Wydra

Markus Wydra 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).

  • Method for producing benzo annelated heterocycles
    Patent number: 6723848
    Abstract: Process for the preparation of benzo-fused heterocycles of general formula I: in which X, R1, R2, R3, R4, R5 and n are as defined in claim 1, by reacting tetrahydrobenzo-fused heterocycles of formula II: in which X, R1, R2, R3, R4, R5, n and Ac are as defined in claim 1, with a catalytic amount of a noble metal catalyst in the presence of a hydrogen acceptor and then deacylating the acylated amino group by the addition of an amine.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: April 20, 2004
    Assignee: Merck Patent Gesellschaft mit Beschränkter Haftung
    Inventors: Frank-Hardi Wartenberg, Thomas Koppe, Walter Wetzel, Markus Wydra, Achim Benz
  • Method for producing benzo annelated heterocycles
    Publication number: 20030078422
    Abstract: Process for the preparation of benzo-fused heterocycles of general formula I: 1
    Type: Application
    Filed: October 9, 2002
    Publication date: April 24, 2003
    Inventors: Frank-Hardi Wartenberg, Thomas Koppe, Walter Wetzel, Markus Wydra, Achim Benz
  • Process for the preparation of cyclohexanones
    Patent number: 6215028
    Abstract: The invention relates to a process for the preparation of cyclohexanones from the corresponding phenols by partial hydrogenation, characterized in that the reaction mixture obtained by means of the hydrogenation is treated with sulfonating agents before the isolation of the cyclohexanone.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: April 10, 2001
    Assignee: Merck Patent Gesellschaft mit
    Inventors: Bernd Oster, Peter Mackert, Detlef Pauluth, Markus Wydra