Granted Patent
Utility
US 5,961,864 · App. 09/071,940
Toner image heating device
Inventors:
Isao Nakajima, Akihiko Yamazaki, Akitomo Kuwabara, Yoji Hirose, Hidefumi Ohtsuka, Hiromitsu Fukuda
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: May 5, 1998
Inventors
Isao Nakajima
Akihiko Yamazaki
Akitomo Kuwabara
Yoji Hirose
Hidefumi Ohtsuka
Hiromitsu Fukuda
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.