Granted Patent
Utility
US 5,359,396 · App. 08/063,426
Toner density detection method for electrophotographic apparatus
Inventors:
Yoshio Ogura, Yasuyuki Tsuji, Shuuho Yokokawa, Kunitomo Takahashi, Isao Nakajima, Muneyoshi Akai, Hiroshi Ueno, Isao Watanabe, Tsukasa Onose
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: May 19, 1993
Inventors
Yoshio Ogura
Yasuyuki Tsuji
Shuuho Yokokawa
Kunitomo Takahashi
Isao Nakajima
Muneyoshi Akai
Hiroshi Ueno
Isao Watanabe
Tsukasa Onose
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.