Assignee
UNICO
US33 patents
Top patents by PatentIndex Score
US7117120B2Oct 3, 2006
Control system for centrifugal pumps
UNICO139 citations98
US7668694B2Feb 23, 2010
Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore
UNICO63 citations97
US7558699B2Jul 7, 2009
Control system for centrifugal pumps
UNICO53 citations97
US7168924B2Jan 30, 2007
Rod pump control system including parameter estimator
UNICO116 citations97
US7437215B2Oct 14, 2008
Method and system for improving pump efficiency and productivity under power disturbance conditions
UNICO63 citations96
US7330779B2Feb 12, 2008
Method and system for improving pump efficiency and productivity under power disturbance conditions
UNICO48 citations93
US7869978B2Jan 11, 2011
Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore
UNICO44 citations92
US5050135ASep 17, 1991
Magnetostrictive multiple position sensing device
UNICO22 citations92
US4704568ANov 3, 1987
Linear induction motor transport system
UNICO46 citations92
US4922299AMay 1, 1990
Electrostatic charge emitting apparatus
UNICO30 citations91
US4815916AMar 28, 1989
Apparatus for raising a magnetizable object from a stack and for moving it away for further processing
UNICO24 citations91
US9124169B2Sep 1, 2015
Autotransformer system reducing total harmonic distortion
UNICO21 citations90
US7748308B2Jul 6, 2010
Pneumatic biasing of a linear actuator and implementations thereof
UNICO22 citations90
US7534096B2May 19, 2009
Method and system for improving pump efficiency and productivity under power disturbance conditions
UNICO28 citations90
US5277036AJan 11, 1994
Modular air conditioning system with adjustable capacity
UNICO164 citations89
US6776710B1Aug 17, 2004
Vent structure for slotted outlet with uniform velocity profile
UNICO32 citations87
US8029345B2Oct 4, 2011
Fire stop outlet for small duct, high velocity air distribution systems
UNICO37 citations85
US4891590AJan 2, 1990
Linear resolver utilizing plural nulled coil sets
UNICO41 citations85
US7645124B2Jan 12, 2010
Estimation and control of a resonant plant prone to stick-slip behavior
UNICO14 citations83
US7321211B2Jan 22, 2008
Power variation control system for cyclic loads
UNICO16 citations83
US8384318B2Feb 26, 2013
Induction motor torque control in a pumping system
UNICO5 citations82
US4795956AJan 3, 1989
Web motion converter
UNICO10 citations74
US7921689B2Apr 12, 2011
Pneumatic biasing of a linear actuator and implementations thereof
UNICO6 citations71
US4287462ASep 1, 1981
Veneer lathe control system
UNICO18 citations71
US9528355B2Dec 27, 2016
Enhanced oil production using control of well casing gas pressure
UNICO3 citations70
US4491777AJan 1, 1985
Position control of fabricating materials
UNICO12 citations70
US4954033ASep 4, 1990
Transfer mechanism for conveyor
UNICO15 citations68
US5319295AJun 7, 1994
Digital current regulator
UNICO10 citations67
US6168518B1Jan 2, 2001
Vent structure with slotted rectangular outlet
UNICO11 citations65
US9353617B2May 31, 2016
Apparatus and method of referencing a sucker rod pump
UNICO2 citations62
US7786691B2Aug 31, 2010
Bus disturbance regulator
UNICO6 citations60
US7545113B2Jun 9, 2009
Harmonic disturbance regulator
UNICO2 citations55
US6866203B2Mar 15, 2005
Method and apparatus for sizing an environmental control system
UNICO3 citations50