Granted Patent
Utility
US 4,490,452 · App. 06/560,063
Xerographic photoconductors with cross-linked epoxy binder
Inventors:
Robert B. Champ, Yau T. Chen
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Dec 9, 1983
Inventors
Robert B. Champ
Yau T. Chen
Assignee (at issue)
International Business Machines 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.