Granted Patent
Utility
US 6,730,231 · App. 10/115,216
Plasma mass filter with axially opposed plasma injectors
Inventor:
Sergei Putvinski
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Apr 2, 2002
Inventor
Sergei Putvinski
Assignee (at issue)
Archimedes Technology Group, 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.