Granted Patent
Utility
US 5,355,445 · App. 07/865,186
Knowledge base management system for an information reasoning apparatus
Inventors:
Kouichi Shibao, Yukinori Osada, Makoto Shimizu, Tadashi Nishimura
Patented Case
View Patent ↗
Granted: Oct 11, 1994
Filed: Apr 8, 1992
Inventors
Kouichi Shibao
Yukinori Osada
Makoto Shimizu
Tadashi Nishimura
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.