Barbier, William J.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Barbier, William J..The latest application filed is for "non-prismatic optical liquid level sensing assembly".

Company Profile

0.12.2

Barbier, William J. - Hazelwood MO
Barbier; William J. - St. Louis MO

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Non-prismatic Optical Liquid Level Sensing Assembly App 20030234374 - Barbier, William J.	2003-12-25
Non-prismatic optical liquid level sensing assembly Grant 6,664,558 - Barbier December 16, 2	2003-12-16
Rate of change detector for refrigerant floodback Grant 6,578,373 - Barbier June 17, 2	2003-06-17
Non-fouling liquid level control Grant 6,557,412 - Barbier , et al. May 6, 2	2003-05-06
Protective construction for piezo-resistive pressure transducer App 20010030596 - Barbier, William J.	2001-10-18
Low oil detector with automatic reset Grant 5,765,994 - Barbier June 16, 1	1998-06-16
Superheat gage with plug-in data module Grant 5,627,770 - Barbier , et al. May 6, 1	1997-05-06
Optical liquid level sensor for pressurized systems utilizing prismatic element Grant 5,278,426 - Barbier January 11, 1	1994-01-11
Oil level control system Grant 5,103,648 - Barbier April 14, 1	1992-04-14
Apparatus for detecting small bubbles in a pressurized fluid stream Grant 5,072,595 - Barbier December 17, 1	1991-12-17
Liquid level control system for refrigeration apparatus Grant 4,809,129 - Hansen, III , et al. February 28, 1	1989-02-28
Refrigeration control system for modulating electrically-operated expansion valves Grant 4,448,038 - Barbier May 15, 1	1984-05-15
Refrigeration control system for modulating electrically-operated expansion valves Grant 4,362,027 - Barbier December 7, 1	1982-12-07
Valve control means and refrigeration systems therefor Grant 3,914,952 - Barbier October 28, 1	1975-10-28

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