Granted Patent
Utility
US 6,182,439 · App. 09/385,139
High and low pressure sides-integrating system turbine, long blades thereof and combined cycle power generation system
Inventors:
Masao Siga, Takeshi Onoda, Shigeyoshi Nakamura, Ryo Hiraga
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Aug 31, 1999
Inventors
Masao Siga
Takeshi Onoda
Shigeyoshi Nakamura
Ryo Hiraga
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.