Granted Patent
Utility
US 6,202,470 · App. 09/386,669
System and method for isotope ratio analysis and gas detection by photoacoustics
Inventor:
Mau-Song Chou
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Aug 31, 1999
Inventor
Mau-Song Chou
Assignee (at issue)
TRW Limited
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.