Patents Examined by Nukund J. Shah
  • Patent number: 5144036
    Abstract: New N-substituted quinolinium salts are provided having advantageous utility as charge agents in electrostatographic toners and developers. The salts have the structure: ##STR1## wherein R is a straight or branched chain alkyl group having from 1 to 5 carbon atoms, aralkyl in which the alkyl group has 1 to 20 carbon atoms and the aryl group has from 6 to 14 carbon atoms, R' and R", which are the same or different, represent hydrogen or a straight or branched chain alkyl or alkoxy group having from 1 to 24 carbon atoms, aralkyl or alkaryl in which the alkyl group has 1 to 20 carbon atoms and the aryl group has from 6 to 14 carbon atoms, unsubstituted aryl having from 6 to 14 carbon atoms or aryl having from 6 to 14 carbon atoms substituted with one or more nitro, alkoxy or halo groups and X is hydrogen, chlorine, bromine, fluorine or iodine.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: September 1, 1992
    Assignee: Eastman Kodak Company
    Inventors: Peter S. Alexandrovich, John C. Wilson