Granted Patent
Utility
US 4,650,999 · App. 06/663,314
Method of mass analyzing a sample over a wide mass range by use of a quadrupole ion trap
Inventors:
William J. Fies, Paul E. Kelley, Walter E. Reynolds, George C. Stafford, John E. P. Syka
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Oct 22, 1984
Inventors
William J. Fies
Paul E. Kelley
Walter E. Reynolds
George C. Stafford
John E. P. Syka
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.