Granted Patent
Utility
US 6,636,813 · App. 09/913,957
Service life management system for high-temperature part of gas turbine
Inventors:
Nobuhiro Isobe, Yasushi Hayasaka, Shigeo Sakurai, Kunihiro Ichikawa
Patented Case
View Patent ↗
Granted: Oct 21, 2003
Filed: Nov 15, 2001
Inventors
Nobuhiro Isobe
Yasushi Hayasaka
Shigeo Sakurai
Kunihiro Ichikawa
Assignee (at issue)
Hitchi, 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.