Granted Patent
Utility
US 4,776,690 · App. 07/105,437
Method and reagent gas for the analysis of nitrogen-containing components using atomic emission spectrometry
Inventor:
Bruce D. Quimby
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Oct 5, 1987
Inventor
Bruce D. Quimby
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.