Granted Patent
Utility
US 6,345,160 · App. 09/633,822
Electrophotographic image forming apparatus
Inventors:
Kazuyoshi Matsuo, Akira Sasaki, Masahiko Saito, Shinichi Hosaka, Nobuaki Fukasawa
Patented Case
View Patent ↗
Granted: Feb 5, 2002
Filed: Aug 7, 2000
Inventors
Kazuyoshi Matsuo
Akira Sasaki
Masahiko Saito
Shinichi Hosaka
Nobuaki Fukasawa
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.