Granted Patent
Utility
US 6,234,749 · App. 09/375,631
Centrifugal compressor
Inventors:
Kazumitsu Hasegawa, Takashi Hokari, Shinichi Ozaki, Kanji Majima
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Aug 17, 1999
Inventors
Kazumitsu Hasegawa
Takashi Hokari
Shinichi Ozaki
Kanji Majima
Assignee (at issue)
ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES 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.