Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Reexamination Certificate
2005-12-15
2008-12-02
Geisel, Kara E (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
C250S459100
Reexamination Certificate
active
07460227
ABSTRACT:
Bones, bone fragments, and shell fragments on or near the surface of processed animal flesh may be detected by detecting their fluorescent emissions. The surface of the flesh is illuminated with UV or visible light to elicit fluorescence of animal bones or shells, and the fluorescent light emissions are measured at first and second different wavelengths, which wavelengths are selected to yield a substantial difference between the ratio or subtractive difference for bones or shells and the ratio or subtractive difference for animal flesh. The ratio and/or subtractive difference of the fluorescent light emissions at the first and second wavelengths is calculated, and the presence of bone, bone fragment, or shell fragment is determined therefrom.
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Chen Yud-Ren
Kim Moon S.
Lefcourt Alan M.
Deck Randall E.
Fado John
Geisel Kara E
Shaw Lesley
The United States of America as represented by the Secretary of
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