Granted Patent
Utility
US 6,011,882 · App. 08/951,254
Chemical sensing techniques employing liquid-core optical fibers
Inventors:
Purnendu K. Dasgupta, Su Yi Liu
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Oct 16, 1997
Inventors
Purnendu K. Dasgupta
Su Yi Liu
Assignee (at issue)
World Precision Instruments
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.