Granted Patent
Utility
US 6,737,641 · App. 10/252,547
Mass spectrometer system
Inventor:
Yoshiaki Kato
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Sep 24, 2002
Inventor
Yoshiaki Kato
Assignee (at issue)
Hitachi High-Technologies 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.