Granted Patent
Utility
US 6,004,374 · App. 08/948,676
Carbonaceous adsorbent membranes for gas dehydration
Inventors:
Madhukar Bhaskara Rao, Shivaji Sircar, Timothy Christopher Golden
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Oct 10, 1997
Inventors
Madhukar Bhaskara Rao
Shivaji Sircar
Timothy Christopher Golden
Assignee (at issue)
Air Products and Chemicals, 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.