Granted Patent
Utility
US 6,262,502 · App. 09/587,293
Rotating machine
Inventors:
Akitomi Semba, Tadashi Sonobe, Takashi Watanabe, Yasuomi Yagi, Junji Sato, Shinsaku Hakuta, Hideaki Mori, Eiji Tsuji, Kenichi Hattori, Atsushi Ishihara
Patented Case
View Patent ↗
Granted: Jul 17, 2001
Filed: Jun 5, 2000
Inventors
Akitomi Semba
Tadashi Sonobe
Takashi Watanabe
Yasuomi Yagi
Junji Sato
Shinsaku Hakuta
Hideaki Mori
Eiji Tsuji
Kenichi Hattori
Atsushi Ishihara
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.