Granted Patent
Utility
US 4,501,600 · App. 06/514,338
Process to separate nitrogen from natural gas
Inventor:
Ravindra F. Pahade
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Jul 15, 1983
Inventor
Ravindra F. Pahade
Assignee (at issue)
Union Carbide 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.