Patents by Inventor Rhonda Bartram

Rhonda Bartram 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).

  • Charge control agent
    Publication number: 20050238983
    Abstract: A composition comprising a toner binder and a charge control agent comprising a sulfonation product of Solvent Blue 23, wherein from greater than 0 up to 30 mole % of the Solvent Blue 23 is sulfonated.
    Type: Application
    Filed: April 27, 2004
    Publication date: October 27, 2005
    Inventors: Gary Ellis, Rhonda Bartram, Edward da Ponte, Toshihiko Oguchi, Timothy Overway, Keiki Suganami