Granted Patent
Utility
US 6,575,700 · App. 10/102,668
Steam turbine blade, and steam turbine and steam turbine power plant using the same
Inventors:
Masahiko Arai, Shigeyoshi Nakamura, Takeshi Onoda, Masao Shiga
Patented Case
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Granted: Jun 10, 2003
Filed: Mar 22, 2002
Inventors
Masahiko Arai
Shigeyoshi Nakamura
Takeshi Onoda
Masao Shiga
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.