Du; Hongliu

Patent Applications and Registrations

Patent applications and USPTO patent grants for Du; Hongliu.The latest application filed is for "energy recovery system and method for hydraulic tool".

Company Profile

1.29.27

Du; Hongliu - Naperville IL
Du; Hongliu - Peoria IL
Du; Hongliu - Dunlap IL

*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
Active damping ride control system for attenuating oscillations in a hydraulic actuator of a machine Grant 10,323,384 - Murugesan , et al.	2019-06-18
Hydraulic pump port plate with variable area metering notch Grant 10,227,964 - Graf , et al.	2019-03-12
Energy recovery system and method for hydraulic tool Grant 10,145,396 - Du , et al. De	2018-12-04
Energy Recovery System And Method For Hydraulic Tool App 20180172039 - DU; Hongliu ; et al.	2018-06-21
Active Damping Ride Control System For Attenuating Oscillations In A Hydraulic Actautor Of A Machine App 20180163373 - Murugesan; Vickram ; et al.	2018-06-14
System for estimating a displacement of a pump Grant 9,869,311 - Du , et al. January 16, 2	2018-01-16
Aeration Sensor For A Hydraulic Circuit App 20170115249 - DU; Hongliu	2017-04-27
Hydraulic Pump Port Plate with Variable Area Metering Notch App 20170058876 - Graf; Kevin J. ; et al.	2017-03-02
System for estimating a sensor output Grant 9,534,616 - Ancha , et al. January 3, 2	2017-01-03
System for Estimating a Displacement of a Pump App 20160341193 - Du; Hongliu ; et al.	2016-11-24
System for estimating a sensor output Grant 9,404,516 - Du , et al. August 2, 2	2016-08-02
System For Estimating A Sensor Output App 20160208831 - ANCHA; Santosh ; et al.	2016-07-21
System For Estimating A Sensor Output App 20160208832 - DU; Hongliu ; et al.	2016-07-21
Hydraulic Control System Having Bias Current Correction App 20150337871 - Du; Hongliu	2015-11-26
Method and apparatus for controlling multiple variable displacement hydraulic pumps Grant 8,935,009 - Du , et al. January 13, 2	2015-01-13
Method, apparatus, and computer-readable storage medium for controlling torque load of multiple variable displacement hydraulic pumps Grant 8,911,216 - Du , et al. December 16, 2	2014-12-16
Pump having port plate pressure control Grant 8,790,091 - Mehta , et al. July 29, 2	2014-07-29
Dielectric Sensor Arrangement and Method for Swashplate Angular Position Detection App 20140169987 - Du; Hongliu	2014-06-19
Electro-Hydraulic Control Design for Pump Discharge Pressure Control App 20140060034 - Du; Hongliu	2014-03-06
Method and apparatus for controlling a pump Grant 8,635,941 - Du January 28, 2	2014-01-28
Method and apparatus for controlling a variable displacement hydraulic pump Grant 8,596,057 - Du December 3, 2	2013-12-03
Multiple-variator control for split power CVT and hydrostatic transmissions Grant 8,500,587 - Du , et al. August 6, 2	2013-08-06
Pump Having Port Plate Pressure Control App 20120301326 - MEHTA; Viral S. ; et al.	2012-11-29
Method and apparatus for controlling multiple variable displacement hydraulic pumps App 20120283882 - Du; Hongliu ; et al.	2012-11-08
Method, Apparatus, And Computer-readable Storage Medium For Controlling Torque Load Of Multiple Variable Displacement Hydraulic Pumps App 20120282115 - Du; Hongliu ; et al.	2012-11-08
Multiple-variator control for split power CVT and hydrostatic transmissions App 20120152056 - Du; Hongliu ; et al.	2012-06-21
Method And Apparatus For Controlling A Pump App 20110094213 - Du; Hongliu	2011-04-28
Method And Apparatus For Controlling A Variable Displacement Hydraulic Pump App 20110079006 - Du; Hongliu	2011-04-07
Feedback acceleration reduction for fluid supply valves Grant 7,797,081 - DeMarco , et al. September 14, 2	2010-09-14
System for controlling a power output Grant 7,536,856 - Du , et al. May 26, 2	2009-05-26
Brake control system for an electric drive vehicle Grant 7,493,205 - Du , et al. February 17, 2	2009-02-17
Feedback Acceleration Reduction For Fluid Supply Valves App 20090005914 - DEMARCO; FRANK A. ; et al.	2009-01-01
System for controlling a power output App 20070119161 - Du; Hongliu ; et al.	2007-05-31
Hydraulic system health indicator Grant 7,204,138 - Du April 17, 2	2007-04-17
Electrohydraulic control system Grant 7,130,721 - Wear , et al. October 31, 2	2006-10-31
Hydraulic system health indicator App 20060162439 - Du; Hongliu	2006-07-27
Hydraulic system health indicator Grant 7,043,975 - Du May 16, 2	2006-05-16
Electrohydraulic control system App 20060095163 - Wear; Jerry A. ; et al.	2006-05-04
Brake control system for an electric drive vehicle App 20050283299 - Du, Hongliu ; et al.	2005-12-22
Hydraulic system health indicator App 20050022589 - Du, Hongliu	2005-02-03
Method and apparatus for controlling a hydraulic motor Grant 6,848,254 - Du February 1, 2	2005-02-01
Sensor for a variable displacement pump Grant 6,848,888 - Du , et al. February 1, 2	2005-02-01
Method And Apparatus For Controlling A Hydraulic Motor App 20040261407 - Du, Hongliu	2004-12-30
Sensor for a variable displacement pump App 20040115065 - Du, Hongliu ; et al.	2004-06-17
Method and apparatus for controlling a variable displacement hydraulic pump Grant 6,623,247 - Du September 23, 2	2003-09-23
Method and apparatus for controlling a variable displacement hydraulic pump App 20020176784 - Du, Hongliu	2002-11-28
Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump Grant 6,468,046 - Du , et al. October 22, 2	2002-10-22
Method and apparatus for controlling pump discharge pressure of a variable displacement hydraulic pump Grant 6,375,433 - Du , et al. April 23, 2	2002-04-23