Patents by Inventor Duane Priddy, Jr.

Duane Priddy, Jr. 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).

  • 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