Granted Patent
Utility
US 5,872,357 · App. 08/866,724
Mass spectrometry calibration using homogeneously substituted fluorinated triazatriphosphorines
Inventor:
J. Michael Flanagan
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: May 30, 1997
Inventor
J. Michael Flanagan
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.