Granted Patent
Utility
US 4,465,749 · App. 06/506,256
Electrostatic charge differential amplification (CDA) in imaging process
Inventors:
John W. May, Yee S. Ng
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Jun 20, 1983
Inventors
John W. May
Yee S. Ng
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.