Granted Patent
Utility
US 5,157,260 · App. 07/702,634
Method and apparatus for focusing ions in viscous flow jet expansion region of an electrospray apparatus
Inventors:
Iain C. Mylchreest, Mark E. Hail, John R. Herron
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: May 17, 1991
Inventors
Iain C. Mylchreest
Mark E. Hail
John R. Herron
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.