Granted Patent
Utility
US 6,649,132 · App. 10/201,335
Process for the removal of impurities from gas streams
Inventors:
Shuen-Cheng Hwang, Neeraj Saxena, Naresh J. Suchak, Robert J. Ferrell
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jul 23, 2002
Inventors
Shuen-Cheng Hwang
Neeraj Saxena
Naresh J. Suchak
Robert J. Ferrell
Assignee (at issue)
The BOC Group Limited
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.