Granted Patent
Utility
US 6,402,818 · App. 09/586,369
Degassing a liquid with a membrane contactor
Inventor:
Amitava Sengupta
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Jun 2, 2000
Inventor
Amitava Sengupta
Assignee (at issue)
Celgard, 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.