Granted Patent
Utility
US 5,034,365 · App. 07/521,302
Silica supported polymerization catalyst
Patented Case
View Patent ↗
Granted: Jul 23, 1991
Filed: May 9, 1990
Assignee (at issue)
Quantum Chemical 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.