Granted Patent
Utility
US 4,482,741 · App. 06/569,367
Preparation of xylylenediamine
Inventor:
Paul R. Kurek
Patented Case
View Patent ↗
Granted: Nov 13, 1984
Filed: Jan 9, 1984
Inventor
Paul R. Kurek
Assignee (at issue)
UOP LLC
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.