Granted Patent
Utility
US 4,418,184 · App. 06/360,440
Process for preparation of ethylene polymer wax
Inventors:
Takashi Ueda, Norio Kashiwa
Patented Case
View Patent ↗
Granted: Nov 29, 1983
Filed: Mar 22, 1982
Inventors
Takashi Ueda
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.