Granted Patent
Utility
US 6,197,268 · App. 09/347,316
Reduction of toxic substances in waste gas emissions
Inventors:
Shuen-Cheng Hwang, Neeraj Saxena, Mark H. Anderson, Robert J. Ferrell
Patented Case
View Patent ↗
Granted: Mar 6, 2001
Filed: Jul 2, 1999
Inventors
Shuen-Cheng Hwang
Neeraj Saxena
Mark H. Anderson
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.