Granted Patent
Utility
US 6,637,982 · App. 10/043,184
Gas transportation method for grain
Inventors:
Yukio Fukushima, Masaaki Miyamoto, Seiki Mitomo, Tatsunori Saigusa, Shoken Takahashi
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Jan 14, 2002
Inventors
Yukio Fukushima
Masaaki Miyamoto
Seiki Mitomo
Tatsunori Saigusa
Shoken Takahashi
Assignee (at issue)
Hitachi Plant Engineering & Construction 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.