Granted Patent
Utility
US 6,710,142 · App. 10/311,212
Method of extracting gaseous fluid
Inventors:
Yasunobu Kaneko, Takamichi Matsumura, Tomoo Nambu, Itaru Matsuhiro
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Dec 16, 2002
Inventors
Yasunobu Kaneko
Takamichi Matsumura
Tomoo Nambu
Itaru Matsuhiro
Assignee (at issue)
Idemitsu Petrochemical 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.