Granted Patent
Utility
US 5,693,390 · App. 08/716,429
Surface-coated vessel and process for producing same
Inventors:
Hajime Inagaki, Koji Yoshii
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Sep 20, 1996
Inventors
Hajime Inagaki
Koji Yoshii
Assignee (at issue)
Mitsui Petrochemical 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.