Granted Patent
Utility
US 5,608,216 · App. 08/568,898
Frequency modulated selected ion species isolation in a quadrupole ion trap
Inventors:
Gregory J. Wells, Charles K. Huston
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Nov 30, 1995
Inventors
Gregory J. Wells
Charles K. Huston
Assignee (at issue)
Varian, 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.