Granted Patent
Utility
US 6,776,582 · App. 10/079,862
Turbine blade and turbine
Inventors:
Kiyoshi Segawa, Yoshio Shikano, Yoshiaki Yamazaki, Shigeki Senoo, Yoshiharu Nakayama
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Feb 22, 2002
Inventors
Kiyoshi Segawa
Yoshio Shikano
Yoshiaki Yamazaki
Shigeki Senoo
Yoshiharu Nakayama
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.