Granted Patent
Utility
US 4,298,713 · App. 06/106,736
Process for preparing low density ethylene copolymers
Inventors:
Yoshinori Morita, Akinori Toyota, Norio Kashiwa
Patented Case
View Patent ↗
Granted: Nov 3, 1981
Filed: Dec 26, 1979
Inventors
Yoshinori Morita
Akinori Toyota
Norio Kashiwa
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.