Patents by Inventor Andrew Beaudin

Andrew Beaudin 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).

  • Zwitterionic chromophores and polymers containing such chromophores
    Patent number: 6894169
    Abstract: A non-linear chromophore is obtained by reacting a picolinium halide having a desired functional group (preferably —OH) with a lithium TCNQ adduct. If desired, the chromophore can be graft polymerized onto a polymer which has complementary functional groups (preferably carboxyl groups). Optionally the polymer can then be cross-linked. Such polymers are useable in electro-optical devices.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: May 17, 2005
    Assignee: Nortel Networks Limited
    Inventors: Zhi Yuan Wang, Naiheng Song, Andrew Beaudin, Cara Weir, Graham Cross, Marek Szablewski