Granted Patent
Utility
US 5,600,405 · App. 08/257,296
Bias cleaning system and electrostatic printing apparatus therewith and operating method thereof
Inventors:
Takao Umeda, Katsuya Kawai, Yosuke Saito, Hiroyuki Mabuchi, Masayasu Anzai, Masato Miwa, Takashi Suzuki, Teruaki Mitsuya, Yasuo Takuma
Patented Case
View Patent ↗
Granted: Feb 4, 1997
Filed: Jun 9, 1994
Inventors
Takao Umeda
Katsuya Kawai
Yosuke Saito
Hiroyuki Mabuchi
Masayasu Anzai
Masato Miwa
Takashi Suzuki
Teruaki Mitsuya
Yasuo Takuma
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.