Granted Patent
Utility
US 5,475,183 · App. 08/161,061
Process for producing lower olefins
Inventors:
Shintaro Araki, Katsuo Taniguchi, Toshiyuki Isaka
Patented Case
View Patent ↗
Granted: Dec 12, 1995
Filed: Dec 3, 1993
Inventors
Shintaro Araki
Katsuo Taniguchi
Toshiyuki Isaka
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.