Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Reexamination Certificate
2011-06-28
2011-06-28
Porta, David P (Department: 2884)
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
C073S152020, C073S152480, C073S152490, C073S38200R, C250S227180, C250S227190, C250S227230, C250S225000, C250S256000
Reexamination Certificate
active
07968841
ABSTRACT:
A sensor for measuring force, the sensor including: a light source; and a mixing medium in optical communication with the light source and exposed to the force; wherein four wave mixing of light interacting with the mixing medium provides a signal that indicates the force.
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Baker Hughes Incorporated
Boosalis Faye
Cantor & Colburn LLP
Porta David P
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