1
John S Lievois, Roberto M Lansangan, Mark E Sudberry: Narrow band infrared water cut meter. Premier Instruments, Akin Gump Strauss Hauer & Feld, June 13, 2000: US06076049 (28 worldwide citation)

The present invention provides a narrow band infrared water cut meter for detecting a full water cut range of a flow stream. The water cut meter includes a light source probe for irradiating the flow stream with a narrow band of infrared light and a light detector probe for sensing infrared light pa ...


2
Danny G McGuire, Denver C McGuire, Mark E Sudberry: Fluid analysis system. Dunlap Codding & Lee, April 14, 1992: US05105085 (28 worldwide citation)

A system for analyzing fluids. In one embodiment, the system measures the water content in an oil/water emulsion. A fluid probe comprising an infrared light emitting diode and a phototransistor measures the opacity of the fluid. The signal from the phototransistor is input into a series of potentiom ...


3
Danny G McGuire, Damon C McGuire, Denver C McGuire, Mark E Sudberry: Fluid level monitoring and control system. Mary M Lee, July 30, 1991: US05035581 (13 worldwide citation)

A system for monitoring and controlling the level of a fluid in a vessel, particularly applicable to controlling the pump operation at an oil well. The system includes a fluid level sensing unit having a plurality of sensors positioned at selected levels in the well casing outside the tubing string. ...