Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2006-10-31
2006-10-31
Williams, Hezron (Department: 2856)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S724000
Reexamination Certificate
active
07129717
ABSTRACT:
An osmolarity measuring system is configured to receive a contact lens in a measurement chamber. The measurement chamber includes a volume of fluid, and a series of electrodes are configured to measure the electrical properties of the fluid. A processing device correlates the measured electrical properties with an osmolarity measurement. Further, the processing device is configured to track trends in stored osmolarity measurements and alert the user to take an action, including the cessation or alteration of product use.
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Ogasawara et al. “Electrical conductivity of tear fluid in healthy persons and keratoconjunctivitis sicca patients measured by a flexible conductimetric sensor”, Springer-Verlag 1996, 542-546.
Baker & McKenzie
Christensen Ryan
Ocusense, Inc.
Williams Hezron
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