Granted Patent
Utility
US 4,409,033 · App. 06/332,401
Simulated moving bed separation process for high viscosity feed streams
Inventor:
Charles F. LeRoy
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Dec 18, 1981
Inventor
Charles F. LeRoy
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.