Granted Patent
Utility
US 6,426,170 · App. 09/850,256
Toner and developer compositions with charge enhancing additives
Inventors:
Robert D. Bayley, Angelo J. Barbetta
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: May 7, 2001
Inventors
Robert D. Bayley
Angelo J. Barbetta
Assignee (at issue)
Xerox Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.