Patents by Inventor Robert Donald Simpson

Robert Donald Simpson 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 preparing macrocyclic compounds
    Patent number: 7148347
    Abstract: Disclosed is a process for preparing a macrocyclic compound of the formula (I): which is carried out using an intermediate of the formula (II): wherein W, R1 through R4, D, A and R12 are as defined herein. The compounds of formula (I) are potent active agents for the treatment of hepatitis C virus (HCV) infection.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: December 12, 2006
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Joerg Brandenburg, Kai Donsbach, Hans-Dieter Ecker, Rogelio Perez Frutos, Fabrice Gallou, Dieter Gutheil, Nizar Haddad, Robert Hagenkoetter, Dirk Kemmer, Jutta Kroeber, Thomas Nicola, Juergen Schnaubelt, Michael Schul, Robert Donald Simpson, Xudong Wei, Eric Winter, Yibo Xu, Nathan K. Yee