Granted Patent
Utility
US 6,674,067 · App. 10/188,577
Methods and apparatus to control charge neutralization reactions in ion traps
Inventors:
Peter Grosshans, Chad M. Ostrander, Craig A. Walla
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Jul 2, 2002
Inventors
Peter Grosshans
Chad M. Ostrander
Craig A. Walla
Assignee (at issue)
Hitachi High Technologies America, Inc.
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.