Granted Patent
Utility
US 4,447,263 · App. 06/427,279
Blade member of cermet having surface reaction layer and process for producing same
Inventors:
Taijiro Sugizawa, Hironori Yoshimura, Junichi Toyama
Patented Case
View Patent ↗
Granted: May 8, 1984
Filed: Sep 29, 1982
Inventors
Taijiro Sugizawa
Hironori Yoshimura
Junichi Toyama
Assignee (at issue)
Mitsubishi Kinzoku Kabushiki Kaisha
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.