Granted Patent
Utility
US 5,750,993 · App. 08/647,297
Method of reducing noise in an ion trap mass spectrometer coupled to an atmospheric pressure ionization source
Inventor:
Mark E. Bier
Patented Case
View Patent ↗
Granted: May 12, 1998
Filed: May 9, 1996
Inventor
Mark E. Bier
Assignee (at issue)
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.