Granted Patent
Utility
US 6,770,875 · App. 09/762,239
Apparatus and method for desolvating and focussing ions for introduction into a mass spectrometer
Inventors:
Roger Guevremont, Randy Purves
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Jun 28, 2001
Inventors
Roger Guevremont
Randy Purves
Assignee (at issue)
NATIONAL RESEARCH COUNCIL OF CANADA
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.