Granted Patent
Utility
US 4,318,715 · App. 06/206,334
Process for sweeping methane from a physical solvent
Inventor:
Robert Chou
Patented Case
View Patent ↗
Granted: Mar 9, 1982
Filed: Nov 13, 1980
Inventor
Robert Chou
Assignee (at issue)
ALLIED CONSULTING, INC.
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.