Granted Patent
Utility
US 4,588,794 · App. 06/644,670
Process for production of rubbery ethylene/1-butene/polyene copolymers
Inventors:
Hidekuni Oda, Kazuhiko Murata, Hirokazu Kajiura, Akira Matsuda
Patented Case
View Patent ↗
Granted: May 13, 1986
Filed: Aug 28, 1984
Inventors
Hidekuni Oda
Kazuhiko Murata
Hirokazu Kajiura
Akira Matsuda
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.