Granted Patent
Utility
US 5,157,137 · App. 07/736,416
Method of making gel free alkylaluminoxane solutions
Inventor:
Samuel A. Sangokoya
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Jul 26, 1991
Inventor
Samuel A. Sangokoya
Assignee (at issue)
Ethyl Corporation
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.