Granted Patent
Utility
US 5,957,657 · App. 09/145,237
Method of forming a cooling air passage in a gas turbine stationary blade shroud
Inventors:
Eiji Akita, Masahito Kataoka, Yasuoki Tomita, Wataru KAWAI, Takashi Fukura, Hiroshi Asano
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Sep 1, 1998
Inventors
Eiji Akita
Masahito Kataoka
Yasuoki Tomita
Wataru KAWAI
Takashi Fukura
Hiroshi Asano
Assignee (at issue)
Mitisubishi Heavy Industries, 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.