Granted Patent
Utility
US 5,276,232 · App. 08/039,179
Process for preparing high-octane gasoline blending stock
Inventors:
Shinichi Inoue, Toshiji Makabe, Tatsuo Morimoto, Kazutomo Shimizu
Patented Case
View Patent ↗
Granted: Jan 4, 1994
Filed: Apr 16, 1993
Inventors
Shinichi Inoue
Toshiji Makabe
Tatsuo Morimoto
Kazutomo Shimizu
Assignee (at issue)
Research Association for the Utilization of Light Oil
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.