Optics: measuring and testing – Standard
Reexamination Certificate
2007-06-12
2007-06-12
Lauchman, Layla (Department: 2877)
Optics: measuring and testing
Standard
C356S238100, C356S238200
Reexamination Certificate
active
10854438
ABSTRACT:
A system that calibrates instruments for measuring the light or air permeability of a material, and includes a calibration target which can be used for calibration of either light-based or air-based instruments. The calibration target simulates the material whose permeability is being measured, and includes a plate having multiple, angled or parallel rows of perforations provided therethrough. The permeability measuring instrument measures the permeability of the calibration target, and compares the measured permeability with a predetermined permeability of the calibration target and calibrates the permeability measuring instrument based upon the comparison.
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Connolly Bove & Lodge & Hutz LLP
Lauchman Layla
Philip Morris USA Inc.
Ton Tri
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