Granted Patent
Utility
US 6,818,077 · App. 10/429,801
High-strength Ni-base superalloy and gas turbine blades
Inventors:
Akira Yoshinari, Hideki Tamaki, Hiroyuki Doi
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: May 6, 2003
Inventors
Akira Yoshinari
Hideki Tamaki
Hiroyuki Doi
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.