Granted Patent
Utility
US 5,111,235 · App. 07/660,266
Method of operating electrophotographic printing apparatus
Inventors:
Hiroshi Ueno, Yasuo Kikuchi, Kunitomo Takahashi, Koji Doi, Tsukasa Onose, Toshitaka Ogawa
Patented Case
View Patent ↗
Granted: May 5, 1992
Filed: Feb 26, 1991
Inventors
Hiroshi Ueno
Yasuo Kikuchi
Kunitomo Takahashi
Koji Doi
Tsukasa Onose
Toshitaka Ogawa
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.