Granted Patent
Utility
US 5,073,673 · App. 07/530,583
Process for the production of high-octane gasoline blending stock
Inventors:
Kazuo Hirabayashi, Tadami Kondoh, Hiroaki Nishijima, Shinichi Inoue, Kouji Adachi, Fumiho Igarashi, Toshio Wakai
Patented Case
View Patent ↗
Granted: Dec 17, 1991
Filed: May 30, 1990
Inventors
Kazuo Hirabayashi
Tadami Kondoh
Hiroaki Nishijima
Shinichi Inoue
Kouji Adachi
Fumiho Igarashi
Toshio Wakai
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.