Granted Patent
Utility
US 5,041,149 · App. 07/599,415
Separation of nitrogen and methane with residue turboexpansion
Inventor:
James R. Handley
Patented Case
View Patent ↗
Granted: Aug 20, 1991
Filed: Oct 18, 1990
Inventor
James R. Handley
Assignee (at issue)
Union Carbide Industrial Gases Technology 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.