Granted Patent
Utility
US 6,709,487 · App. 10/278,131
Adsorbent for moisture removal from fluorine-containing fluids
Inventors:
Chun Christine Dong, Madhukar Bhaskara Rao, Dingjun Wu
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Oct 22, 2002
Inventors
Chun Christine Dong
Madhukar Bhaskara Rao
Dingjun Wu
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.