Granted Patent
Utility
US 5,300,441 · App. 08/016,172
Method for measuring and determining nitrogen content in a sample and providing an output data of total nitrogen and selected constituent nitrogen compounds including nitrate and nitrite
Inventors:
Eugene Malcolm Fujinari, Allen J. Britten
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Jan 21, 1993
Inventors
Eugene Malcolm Fujinari
Allen J. Britten
Assignee (at issue)
Antek Instruments, LP
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.