Granted Patent
Utility
US 6,692,224 · App. 10/097,611
Turbo compressor
Inventors:
Haruo Miura, Kazuo Takeda, Naohiko Takahashi, Hideo Nishida, Hiromi Kobayashi, Tomoyuki Ishikawa
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Mar 15, 2002
Inventors
Haruo Miura
Kazuo Takeda
Naohiko Takahashi
Hideo Nishida
Hiromi Kobayashi
Tomoyuki Ishikawa
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.