Granted Patent
Utility
US 6,558,451 · App. 09/851,750
Multiple bed pressure swing adsorption method and apparatus
Inventors:
Norman R. McCombs, Robert Casey
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: May 9, 2001
Inventors
Norman R. McCombs
Robert Casey
Assignee (at issue)
AirSep Corporation
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.