Granted Patent
Utility
US 6,741,830 · App. 10/229,056
Image forming apparatus
Inventors:
Yasushi Kinoshita, Kazutaka Sato, Shigeru Obata, Akitomo Kuwabara, Tetsuya Ooba
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Aug 28, 2002
Inventors
Yasushi Kinoshita
Kazutaka Sato
Shigeru Obata
Akitomo Kuwabara
Tetsuya Ooba
Assignees (at issue)
HITACHI, LTD.
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.