Granted Patent
Utility
US 5,900,533 · App. 08/592,748
System and method for isotope ratio analysis and gas detection by photoacoustics
Inventor:
Mau-Song Chou
Patented Case
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Granted: May 4, 1999
Filed: Aug 3, 1995
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.