Granted Patent
Utility
US 4,377,628 · App. 06/257,346
Electrophotographic member with .alpha.-Si and H
Inventors:
Sachio Ishioka, Eiichi Maruyama, Yoshinori Imamura, Hirokazu Matsubara, Shinkichi Horigome
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Apr 24, 1981
Inventors
Sachio Ishioka
Eiichi Maruyama
Yoshinori Imamura
Hirokazu Matsubara
Shinkichi Horigome
Assignee (at issue)
HITACHI, LTD.
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.