Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2007-05-29
2007-05-29
Hannaher, Constantine (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
Reexamination Certificate
active
11130627
ABSTRACT:
The the thickness of an opaque coating may be measured using near-infrared absorbance. One measurement method includes transmitting the near-infrared radiation towards the opaque material and determining relative absorbance levels over a range of near-infrared wavelengths. Absorbance wavelengths having relatively high absorbance and relatively low absorbance are then identified and selected. The selected wavelength values are then correlated with known material thicknesses.
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Quigley Wes W.
Shelley Paul H.
Hannaher Constantine
Lee & Hayes PLLC
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