Granted Patent
Utility
US 5,674,655 · App. 08/739,902
Electrostatographic toners containing metal oxides
Inventors:
Robert A. Guistina, Dinesh Tyagi
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: Oct 30, 1996
Inventors
Robert A. Guistina
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.