Hongliu DU

Person

Naperville, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Active damping ride control system for attenuating oscillations in...
- Patent number 10,323,384
- Issue date Jun 18, 2019
- Caterpillar Inc.
- Vickram Murugesan
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic pump port plate with variable area metering notch
- Patent number 10,227,964
- Issue date Mar 12, 2019
- Caterpillar Inc.
- Kevin J. Graf
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Energy recovery system and method for hydraulic tool
- Patent number 10,145,396
- Issue date Dec 4, 2018
- Caterpillar Inc.
- Hongliu Du
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
System for estimating a displacement of a pump
- Patent number 9,869,311
- Issue date Jan 16, 2018
- Caterpillar Inc.
- Hongliu Du
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
System for estimating a sensor output
- Patent number 9,534,616
- Issue date Jan 3, 2017
- Caterpillar Inc.
- Santosh Ancha
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
System for estimating a sensor output
- Patent number 9,404,516
- Issue date Aug 2, 2016
- Caterpillar Inc.
- Hongliu Du
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Method and apparatus for controlling multiple variable displacement...
- Patent number 8,935,009
- Issue date Jan 13, 2015
- Caterpillar Inc.
- Hongliu Du
- G05 - CONTROLLING REGULATING
Information Patent Grant
Method, apparatus, and computer-readable storage medium for control...
- Patent number 8,911,216
- Issue date Dec 16, 2014
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Pump having port plate pressure control
- Patent number 8,790,091
- Issue date Jul 29, 2014
- Caterpillar Inc.
- Viral S. Mehta
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for controlling a pump
- Patent number 8,635,941
- Issue date Jan 28, 2014
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for controlling a variable displacement hydrau...
- Patent number 8,596,057
- Issue date Dec 3, 2013
- Caterpillar Inc.
- Hongliu Du
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Multiple-variator control for split power CVT and hydrostatic trans...
- Patent number 8,500,587
- Issue date Aug 6, 2013
- Caterpillar Inc.
- Hongliu Du
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Feedback acceleration reduction for fluid supply valves
- Patent number 7,797,081
- Issue date Sep 14, 2010
- Caterpillar Inc.
- Frank A DeMarco
- B60 - VEHICLES IN GENERAL
Information Patent Grant
System for controlling a power output
- Patent number 7,536,856
- Issue date May 26, 2009
- Caterpillar Inc.
- Hongliu Du
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Brake control system for an electric drive vehicle
- Patent number 7,493,205
- Issue date Feb 17, 2009
- Caterpillar Inc.
- Hongliu Du
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Hydraulic system health indicator
- Patent number 7,204,138
- Issue date Apr 17, 2007
- Caterpillar Inc.
- Hongliu Du
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Electrohydraulic control system
- Patent number 7,130,721
- Issue date Oct 31, 2006
- Caterpillar Inc.
- Jerry A. Wear
- G05 - CONTROLLING REGULATING
Information Patent Grant
Hydraulic system health indicator
- Patent number 7,043,975
- Issue date May 16, 2006
- Caterpillar Inc.
- Hongliu Du
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Sensor for a variable displacement pump
- Patent number 6,848,888
- Issue date Feb 1, 2005
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for controlling a hydraulic motor
- Patent number 6,848,254
- Issue date Feb 1, 2005
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for controlling a variable displacement hydrau...
- Patent number 6,623,247
- Issue date Sep 23, 2003
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Apparatus and method for controlling a discharge pressure of a vari...
- Patent number 6,468,046
- Issue date Oct 22, 2002
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Apparatus and method for controlling a discharge pressure of a vari...
- Patent number 6,374,722
- Issue date Apr 23, 2002
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for controlling pump discharge pressure of a v...
- Patent number 6,375,433
- Issue date Apr 23, 2002
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
ENERGY RECOVERY SYSTEM AND METHOD FOR HYDRAULIC TOOL
- Publication number 20180172039
- Publication date Jun 21, 2018
- Caterpillar Inc.
- Hongliu DU
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
ACTIVE DAMPING RIDE CONTROL SYSTEM FOR ATTENUATING OSCILLATIONS IN...
- Publication number 20180163373
- Publication date Jun 14, 2018
- Caterpillar Inc.
- Vickram Murugesan
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
AERATION SENSOR FOR A HYDRAULIC CIRCUIT
- Publication number 20170115249
- Publication date Apr 27, 2017
- Caterpillar Inc.
- Hongliu DU
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Hydraulic Pump Port Plate with Variable Area Metering Notch
- Publication number 20170058876
- Publication date Mar 2, 2017
- Caterpillar Inc.
- Kevin J. Graf
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
System for Estimating a Displacement of a Pump
- Publication number 20160341193
- Publication date Nov 24, 2016
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
SYSTEM FOR ESTIMATING A SENSOR OUTPUT
- Publication number 20160208831
- Publication date Jul 21, 2016
- Caterpillar Inc.
- Santosh ANCHA
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
SYSTEM FOR ESTIMATING A SENSOR OUTPUT
- Publication number 20160208832
- Publication date Jul 21, 2016
- Caterpillar Inc.
- Hongliu DU
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
HYDRAULIC CONTROL SYSTEM HAVING BIAS CURRENT CORRECTION
- Publication number 20150337871
- Publication date Nov 26, 2015
- Caterpillar Inc.
- Hongliu Du
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
Dielectric Sensor Arrangement and Method for Swashplate Angular Pos...
- Publication number 20140169987
- Publication date Jun 19, 2014
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Electro-Hydraulic Control Design for Pump Discharge Pressure Control
- Publication number 20140060034
- Publication date Mar 6, 2014
- CAPTERPILLAR, INC.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
PUMP HAVING PORT PLATE PRESSURE CONTROL
- Publication number 20120301326
- Publication date Nov 29, 2012
- Viral S. MEHTA
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Method and apparatus for controlling multiple variable displacement...
- Publication number 20120283882
- Publication date Nov 8, 2012
- Hongliu Du
- G05 - CONTROLLING REGULATING
Information Patent Application
METHOD, APPARATUS, AND COMPUTER-READABLE STORAGE MEDIUM FOR CONTROL...
- Publication number 20120282115
- Publication date Nov 8, 2012
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Multiple-variator control for split power CVT and hydrostatic trans...
- Publication number 20120152056
- Publication date Jun 21, 2012
- Caterpillar Inc.
- Hongliu Du
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
METHOD AND APPARATUS FOR CONTROLLING A PUMP
- Publication number 20110094213
- Publication date Apr 28, 2011
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
METHOD AND APPARATUS FOR CONTROLLING A VARIABLE DISPLACEMENT HYDRAU...
- Publication number 20110079006
- Publication date Apr 7, 2011
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
FEEDBACK ACCELERATION REDUCTION FOR FLUID SUPPLY VALVES
- Publication number 20090005914
- Publication date Jan 1, 2009
- Caterpillar Inc.
- FRANK A. DEMARCO
- B60 - VEHICLES IN GENERAL
Information Patent Application
System for controlling a power output
- Publication number 20070119161
- Publication date May 31, 2007
- Caterpillar Inc.
- Hongliu Du
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Hydraulic system health indicator
- Publication number 20060162439
- Publication date Jul 27, 2006
- Hongliu Du
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
Electrohydraulic control system
- Publication number 20060095163
- Publication date May 4, 2006
- Caterpillar Inc.
- Jerry A. Wear
- G05 - CONTROLLING REGULATING
Information Patent Application
Brake control system for an electric drive vehicle
- Publication number 20050283299
- Publication date Dec 22, 2005
- Caterpillar Inc.
- Hongliu Du
- B60 - VEHICLES IN GENERAL
Information Patent Application
Hydraulic system health indicator
- Publication number 20050022589
- Publication date Feb 3, 2005
- Hongliu Du
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
METHOD AND APPARATUS FOR CONTROLLING A HYDRAULIC MOTOR
- Publication number 20040261407
- Publication date Dec 30, 2004
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Sensor for a variable displacement pump
- Publication number 20040115065
- Publication date Jun 17, 2004
- Caterpillar Inc.
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Method and apparatus for controlling a variable displacement hydrau...
- Publication number 20020176784
- Publication date Nov 28, 2002
- Hongliu Du
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Person

Patents Grantslast 30 patents

Active damping ride control system for attenuating oscillations in...

Hydraulic pump port plate with variable area metering notch

Energy recovery system and method for hydraulic tool

System for estimating a displacement of a pump

System for estimating a sensor output

System for estimating a sensor output

Method and apparatus for controlling multiple variable displacement...

Method, apparatus, and computer-readable storage medium for control...

Pump having port plate pressure control

Method and apparatus for controlling a pump

Method and apparatus for controlling a variable displacement hydrau...

Multiple-variator control for split power CVT and hydrostatic trans...

Feedback acceleration reduction for fluid supply valves

System for controlling a power output

Brake control system for an electric drive vehicle

Hydraulic system health indicator

Electrohydraulic control system

Hydraulic system health indicator

Sensor for a variable displacement pump

Method and apparatus for controlling a hydraulic motor

Method and apparatus for controlling a variable displacement hydrau...

Apparatus and method for controlling a discharge pressure of a vari...

Apparatus and method for controlling a discharge pressure of a vari...

Method and apparatus for controlling pump discharge pressure of a v...

Patents Applicationslast 30 patents

ENERGY RECOVERY SYSTEM AND METHOD FOR HYDRAULIC TOOL

ACTIVE DAMPING RIDE CONTROL SYSTEM FOR ATTENUATING OSCILLATIONS IN...

AERATION SENSOR FOR A HYDRAULIC CIRCUIT

Hydraulic Pump Port Plate with Variable Area Metering Notch

System for Estimating a Displacement of a Pump

SYSTEM FOR ESTIMATING A SENSOR OUTPUT

SYSTEM FOR ESTIMATING A SENSOR OUTPUT

HYDRAULIC CONTROL SYSTEM HAVING BIAS CURRENT CORRECTION

Dielectric Sensor Arrangement and Method for Swashplate Angular Pos...

Electro-Hydraulic Control Design for Pump Discharge Pressure Control

PUMP HAVING PORT PLATE PRESSURE CONTROL

Method and apparatus for controlling multiple variable displacement...

METHOD, APPARATUS, AND COMPUTER-READABLE STORAGE MEDIUM FOR CONTROL...

Multiple-variator control for split power CVT and hydrostatic trans...

METHOD AND APPARATUS FOR CONTROLLING A PUMP

METHOD AND APPARATUS FOR CONTROLLING A VARIABLE DISPLACEMENT HYDRAU...

FEEDBACK ACCELERATION REDUCTION FOR FLUID SUPPLY VALVES

System for controlling a power output

Hydraulic system health indicator

Electrohydraulic control system

Brake control system for an electric drive vehicle

Hydraulic system health indicator

METHOD AND APPARATUS FOR CONTROLLING A HYDRAULIC MOTOR

Sensor for a variable displacement pump

Method and apparatus for controlling a variable displacement hydrau...