Granted Patent
Utility
US 6,797,176 · App. 10/613,833
Plasma mass filter with inductive rotational drive
Inventor:
Tihiro Ohkawa
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Jul 3, 2003
Inventor
Tihiro Ohkawa
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.