Granted Patent
Utility
US 5,352,890 · App. 07/990,690
Quadrupole ion trap mass spectrometer having two axial modulation excitation input frequencies and method of parent and neural loss scanning
Inventors:
Jodie V. Johnson, Randall E. Pedder, Richard A. Yost, Michael S. Story
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Dec 14, 1992
Inventors
Jodie V. Johnson
Randall E. Pedder
Richard A. Yost
Michael S. Story
Assignees (at issue)
University of Florida Foundation, Incorporated
Finnigan 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.