Granted Patent
Utility
US 4,632,785 · App. 06/750,634
Thermally activable trimerization catalyst
Inventor:
Edward A. Barsa
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: Jul 1, 1985
Inventor
Edward A. Barsa
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.