Granted Patent
Utility
US 5,740,504 · App. 08/653,299
Electrophotographing method using carona charging device having areas with and without a grid
Inventors:
Katsuhiro Akinaga, Hirofumi Ouchi, Kaoru Kataoka
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: May 24, 1996
Inventors
Katsuhiro Akinaga
Hirofumi Ouchi
Kaoru Kataoka
Assignee (at issue)
Hitachi Koki Co., 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.