Granted Patent
Utility
US 5,604,069 · App. 08/350,772
Toners and developers containing ammonium trihalozincates as charge-control agents
Inventors:
John C. Wilson, Dinesh Tyagi
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Dec 7, 1994
Inventors
John C. Wilson
Dinesh Tyagi
Assignee (at issue)
EASTMAN KODAK COMPANY
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.