Granted Patent
Utility
US 6,333,632 · App. 09/397,624
Alternating current discharge ionization detector
Inventors:
Wenjun Yang, Peter Hsi
Patented Case
View Patent ↗
Granted: Dec 25, 2001
Filed: Sep 16, 1999
Inventors
Wenjun Yang
Peter Hsi
Assignee (at issue)
RAE SYSTEMS, 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.