Granted Patent
Utility
US 5,183,792 · App. 07/798,214
Catalyst for making polyethylene
Inventors:
Li Wang, Roy T. Mitsche
Patented Case
View Patent ↗
Granted: Feb 2, 1993
Filed: Nov 26, 1991
Inventors
Li Wang
Roy T. Mitsche
Assignee (at issue)
AlliedSignal, Inc.
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.