Granted Patent
Utility
US 4,236,037 · App. 06/053,868
Process for the separation of olefins
Inventor:
Husain A. Al-Chalabi
Patented Case
View Patent ↗
Granted: Nov 25, 1980
Filed: Jul 2, 1979
Inventor
Husain A. Al-Chalabi
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.