Patents by Inventor Jean M. Guay

Jean M. Guay 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).

  • Toner composition
    Patent number: 5382491
    Abstract: The present invention relates to an improved toner composition for electrophotography comprising an improved polyaniline charge control agent.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: January 17, 1995
    Assignee: International Business Machines Corporation
    Inventors: Arthur F. Diaz, Jean M. Guay, My T. Nguyen