Granted Patent
Utility
US 5,128,542 · App. 07/645,648
Method of operating an ion trap mass spectrometer to determine the resonant frequency of trapped ions
Inventors:
Nathan A. Yates, Stephen C. Bradshaw, Richard A. Yost, David B. Tucker
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Jan 25, 1991
Inventors
Nathan A. Yates
Stephen C. Bradshaw
Richard A. Yost
David B. Tucker
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.