Granted Patent
Utility
US 6,173,562 · App. 09/022,441
Exhaust recirculation type combined plant
Inventors:
Motoaki Utamura, Shinichi Hoizumi, Yasushi Takeda, Toshihiko Sasaki, Hideaki Komatsu, Seiichi Kirikami, Takeshi Suzumura, Tetsuo Sasada, Takashi Ikeguchi, Shigehisa Sugita
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Feb 12, 1998
Inventors
Motoaki Utamura
Shinichi Hoizumi
Yasushi Takeda
Toshihiko Sasaki
Hideaki Komatsu
Seiichi Kirikami
Takeshi Suzumura
Tetsuo Sasada
Takashi Ikeguchi
Shigehisa Sugita
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.