Patents by Inventor Robert Kumpf

Robert Kumpf 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).

  • HIV protease inhibitors, compositions containing the same, their pharmaceutical uses and materials for their synthesis
    Publication number: 20050124683
    Abstract: The present invention relates to a series of chemical compounds useful as Human Immunodeficiency Virus (HIV) protease inhibitors and to the use of such compounds as antiviral agents.
    Type: Application
    Filed: September 16, 2004
    Publication date: June 9, 2005
    Inventors: Larry Alegria, Stacie Canan-Koch, Klaus Dress, Buwen Huang, Robert Kumpf, Kathleen Lewis, Jean Matthews, Sylvie Sakata, Scott Virgil
  • Mixtures of cyclic oligocarbonates, their production and use
    Patent number: 6297346
    Abstract: The present invention relates to mixtures of cyclic oligocarbonates, to their production by way of mixtures of bischloroformates, and to their use for the production of linear polycarbonates and for the modification of other linear polycarbonates.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: October 2, 2001
    Assignees: Bayer Aktiengesellschaft, Bayer Corporation
    Inventors: Burkhard Köhler, Duane Priddy, Jr., Yun Chen, Harald Pielartzik, Robert Kumpf
  • Mixtures of cyclic oligocarbonates, their production and use
    Patent number: 6156871
    Abstract: The present invention relates to mixtures of cyclic oligocarbonates, to their production by way of mixtures of bischloroformates, and to their use for the production of linear polycarbonates and for the modification of other linear polycarbonates.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: December 5, 2000
    Assignees: Bayer Aktiengesellschaft, Bayer Corporation
    Inventors: Burkhard Kohler, Duane Priddy, Jr., Yun Chen, Harald Pielartzik, Robert Kumpf
  • Aromatic polyethers containing ester groups
    Patent number: 5221727
    Abstract: The new aromatic polyethers containing ester groups, which are distinguished by high dimensional stability, may be used for the production of all kinds of moulded products as well as for the preparation of block copolymers of aromatic polyether segments and segments of other thermoplastic polymers.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: June 22, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Robert Kumpf, Rolf Wehrmann, Harald Pielartzik, Dittmar Nerger