Pengfei Ma

Person

Naperville, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Cooler bypass valve assembly for hydraulic system return circuit
- Patent number 11,719,265
- Issue date Aug 8, 2023
- Caterpillar Inc.
- Gustaf Andrew Johnson
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Brake slack adjuster having sensing piston with orifice and systems...
- Patent number 11,572,925
- Issue date Feb 7, 2023
- Caterpillar Inc.
- Pengfei Ma
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Cavitation detection system
- Patent number 11,430,319
- Issue date Aug 30, 2022
- Caterpillar Inc.
- Nathan S Pauli
- G08 - SIGNALLING
Information Patent Grant
System and method for providing hydraulic power
- Patent number 10,385,892
- Issue date Aug 20, 2019
- Caterpillar Global Mining LLC
- Sharath Cugati
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Split spool valve
- Patent number 10,337,532
- Issue date Jul 2, 2019
- Caterpillar Inc.
- Pengfei Ma
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Integration of swing energy recovery and engine anti-idling systems
- Patent number 9,951,795
- Issue date Apr 24, 2018
- Caterpillar Inc.
- Tonglin Shang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Fluid systems for machines with integrated energy recovery circuit
- Patent number 9,945,396
- Issue date Apr 17, 2018
- Caterpillar Inc.
- Tonglin Shang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic system having energy recovery
- Patent number 9,897,120
- Issue date Feb 20, 2018
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic system including independent metering valve with flowsharing
- Patent number 9,829,014
- Issue date Nov 28, 2017
- Caterpillar Inc.
- Andrew J. Kleitsch
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Engine assist by recovering swing kinetic energy
- Patent number 9,809,958
- Issue date Nov 7, 2017
- Caterpillar Inc.
- Tonglin Shang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Machine having hydraulic start assist system
- Patent number 9,745,940
- Issue date Aug 29, 2017
- Caterpillar Inc.
- Emily Anne Morris
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Implement system having hydraulic start assist
- Patent number 9,618,014
- Issue date Apr 11, 2017
- Caterpillar Inc.
- Emily Anne Morris
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Hydraulic system recovering swing kinetic and boom potential energy
- Patent number 9,556,591
- Issue date Jan 31, 2017
- Caterpillar Inc.
- Tonglin Shang
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Hybrid apparatus and method for hydraulic systems
- Patent number 9,458,604
- Issue date Oct 4, 2016
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic control system having swing motor energy recovery
- Patent number 9,388,829
- Issue date Jul 12, 2016
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic accumulator health diagnosis
- Patent number 9,366,269
- Issue date Jun 14, 2016
- Caterpillar Inc.
- Dayao Chen
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic control system having swing energy recovery
- Patent number 9,328,744
- Issue date May 3, 2016
- Caterpillar Inc.
- Rustu Cesur
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Energy recovery system having integrated boom/swing circuits
- Patent number 9,290,912
- Issue date Mar 22, 2016
- Caterpillar Inc.
- Gang Victor Wen
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Energy recovery system for hydraulic machine
- Patent number 9,290,911
- Issue date Mar 22, 2016
- Caterpillar Inc.
- Pengfei Ma
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Electro-hydraulic system for recovering and reusing potential energy
- Patent number 9,279,236
- Issue date Mar 8, 2016
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Boom cylinder dig flow regeneration
- Patent number 9,261,118
- Issue date Feb 16, 2016
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic control system having swing energy recovery
- Patent number 9,139,982
- Issue date Sep 22, 2015
- Caterpillar Inc.
- Pengfei Ma
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic control system having electronic flow limiting
- Patent number 9,091,286
- Issue date Jul 28, 2015
- Caterpillar Inc.
- Rustu Cesur
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic control system having swing motor recovery
- Patent number 9,086,081
- Issue date Jul 21, 2015
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Energy recovery hydraulic system
- Patent number 9,086,061
- Issue date Jul 21, 2015
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic control system having swing motor energy recovery
- Patent number 9,068,575
- Issue date Jun 30, 2015
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic control system having energy recovery
- Patent number 8,997,479
- Issue date Apr 7, 2015
- Caterpillar Inc.
- Gang Victor Wen
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic control system having energy recovery kit
- Patent number 8,919,113
- Issue date Dec 30, 2014
- Caterpillar Inc.
- Pengfei Ma
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic control system having swing motor energy recovery
- Patent number 8,850,806
- Issue date Oct 7, 2014
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic accumulator pre-charge pressure detection
- Patent number 8,833,143
- Issue date Sep 16, 2014
- Caterpillar Inc.
- Dayao Chen
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR MONITORING OPERATION OF A HYDRAULIC SYSTEM
- Publication number 20240068204
- Publication date Feb 29, 2024
- Caterpillar Inc.
- Pengfei MA
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
COOLER BYPASS VALVE ASSEMBLY FOR HYDRAULIC SYSTEM RETURN CIRCUIT
- Publication number 20220364581
- Publication date Nov 17, 2022
- Caterpillar Inc.
- Gustaf Andrew Johnson
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
BRAKE SLACK ADJUSTER HAVING SENSING PISTON WITH ORIFICE AND SYSTEMS...
- Publication number 20220333658
- Publication date Oct 20, 2022
- Caterpillar Inc.
- Pengfei MA
- B60 - VEHICLES IN GENERAL
Information Patent Application
SYSTEM AND METHOD FOR PROVIDING HYDRAULIC POWER
- Publication number 20180172037
- Publication date Jun 21, 2018
- Caterpillar Global Mining LLC
- Sharath CUGATI
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
Split Spool Valve
- Publication number 20180156244
- Publication date Jun 7, 2018
- Caterpillar Inc.
- Pengfei Ma
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
FLUID SYSTEMS FOR MACHINES WITH INTEGRATED ENERGY RECOVERY CIRCUIT
- Publication number 20170241445
- Publication date Aug 24, 2017
- Caterpillar Inc.
- Tonglin Shang
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Hydraulic System Including Independent Metering Valve with Flowsharing
- Publication number 20160312807
- Publication date Oct 27, 2016
- Caterpillar Inc.
- Andrew J. Kleitsch
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
Engine Assist by Recovering Swing Kinetic Energy
- Publication number 20160281329
- Publication date Sep 29, 2016
- Caterpillar Inc.
- Tonglin Shang
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Hydraulic System Recovering Swing Kinetic and Boom Potential Energy
- Publication number 20160281330
- Publication date Sep 29, 2016
- Caterpillar Inc.
- Tonglin Shang
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Integration of Swing Energy Recovery and Engine Anti-Idling Systems
- Publication number 20160281745
- Publication date Sep 29, 2016
- Caterpillar Inc.
- Tonglin Shang
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Conserve Energy Through Independent Pump Control in a Hydraulic System
- Publication number 20160138619
- Publication date May 19, 2016
- Caterpillar Inc.
- Jiao Zhang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
HYDRAULIC SYSTEM HAVING ENERGY RECOVERY
- Publication number 20150300384
- Publication date Oct 22, 2015
- Caterpillar Inc.
- Jiao Zhang
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
IMPLEMENT SYSTEM HAVING HYDRAULIC START ASSIST
- Publication number 20150247304
- Publication date Sep 3, 2015
- Caterpillar Inc.
- Emily Anne MORRIS
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
MACHINE HAVING HYDRAULIC START ASSIST SYSTEM
- Publication number 20150247509
- Publication date Sep 3, 2015
- Caterpillar Inc.
- Emily Anne MORRIS
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
MACHINE HAVING HYDRAULIC START ASSIST SYSTEM
- Publication number 20150247513
- Publication date Sep 3, 2015
- Caterpillar Inc.
- Emily Anne Morris
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Boom Cylinder Dig Flow Regeneration
- Publication number 20150197915
- Publication date Jul 16, 2015
- Caterpillar, Inc.
- Jiao Zhang
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
HYBRID APPARATUS AND METHOD FOR HYDRAULIC SYSTEMS
- Publication number 20150191897
- Publication date Jul 9, 2015
- Caterpillar Inc.
- JIAO ZHANG
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
APPARATUS AND METHOD FOR HYDRAULIC SYSTEMS
- Publication number 20150192149
- Publication date Jul 9, 2015
- Caterpillar Inc.
- PENGFEI MA
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY KIT
- Publication number 20150101164
- Publication date Apr 16, 2015
- Caterpillar Inc.
- Pengfei MA
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
HYDRAULIC ACCUMULATOR PRE-CHARGE PRESSURE DETECTION
- Publication number 20150000756
- Publication date Jan 1, 2015
- Caterpillar Inc.
- Dayao Chen
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
Hydraulic Hybrid Boom System Hydraulic Transformer
- Publication number 20140325972
- Publication date Nov 6, 2014
- Caterpillar Inc.
- Pengfei Ma
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Hydraulic Control System Having Relief Flow Capture
- Publication number 20140283915
- Publication date Sep 25, 2014
- Caterpillar Inc.
- Pengfei Ma
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
ENERGY RECOVERY SYSTEM FOR HYDRAULIC MACHINE
- Publication number 20140230420
- Publication date Aug 21, 2014
- Caterpillar Inc.
- Pengfei MA
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Method and Hydraulic Control System Having Swing Motor Energy Recovery
- Publication number 20140208728
- Publication date Jul 31, 2014
- Caterpillar Inc.
- Pengfei Ma
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
HYDRAULIC CONTROL SYSTEM FOR SWING MOTOR
- Publication number 20140174064
- Publication date Jun 26, 2014
- Caterpillar Inc.
- Pengfei Ma
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
HYDRAULIC CONTROL SYSTEM FOR SWING MOTOR
- Publication number 20140174065
- Publication date Jun 26, 2014
- Caterpillar Inc.
- Pengfei Ma
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Energy Recovery Hydraulic System
- Publication number 20140150415
- Publication date Jun 5, 2014
- Caterpillar Inc.
- Jiao Zhang
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
ENERGY RECOVERY SYSTEM HAVING PEAK-SHAVING ACCUMULATOR
- Publication number 20140119868
- Publication date May 1, 2014
- Caterpillar Inc.
- Gang Victor WEN
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
ENERGY RECOVERY SYSTEM HAVING INTEGRATED BOOM/SWING CIRCUITS
- Publication number 20140119867
- Publication date May 1, 2014
- Caterpillar Inc.
- Gang Victor WEN
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
HYDRAULIC CONTROL SYSTEM HAVING ELECTRONIC FLOW LIMITING
- Publication number 20140060025
- Publication date Mar 6, 2014
- Caterpillar Inc.
- Rustu CESUR
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Person

Patents Grantslast 30 patents

Cooler bypass valve assembly for hydraulic system return circuit

Brake slack adjuster having sensing piston with orifice and systems...

Cavitation detection system

System and method for providing hydraulic power

Split spool valve

Integration of swing energy recovery and engine anti-idling systems

Fluid systems for machines with integrated energy recovery circuit

Hydraulic system having energy recovery

Hydraulic system including independent metering valve with flowsharing

Engine assist by recovering swing kinetic energy

Machine having hydraulic start assist system

Implement system having hydraulic start assist

Hydraulic system recovering swing kinetic and boom potential energy

Hybrid apparatus and method for hydraulic systems

Hydraulic control system having swing motor energy recovery

Hydraulic accumulator health diagnosis

Hydraulic control system having swing energy recovery

Energy recovery system having integrated boom/swing circuits

Energy recovery system for hydraulic machine

Electro-hydraulic system for recovering and reusing potential energy

Boom cylinder dig flow regeneration

Hydraulic control system having swing energy recovery

Hydraulic control system having electronic flow limiting

Hydraulic control system having swing motor recovery

Energy recovery hydraulic system

Hydraulic control system having swing motor energy recovery

Hydraulic control system having energy recovery

Hydraulic control system having energy recovery kit

Hydraulic control system having swing motor energy recovery

Hydraulic accumulator pre-charge pressure detection

Patents Applicationslast 30 patents

METHOD FOR MONITORING OPERATION OF A HYDRAULIC SYSTEM

COOLER BYPASS VALVE ASSEMBLY FOR HYDRAULIC SYSTEM RETURN CIRCUIT

BRAKE SLACK ADJUSTER HAVING SENSING PISTON WITH ORIFICE AND SYSTEMS...

SYSTEM AND METHOD FOR PROVIDING HYDRAULIC POWER

Split Spool Valve

FLUID SYSTEMS FOR MACHINES WITH INTEGRATED ENERGY RECOVERY CIRCUIT

Hydraulic System Including Independent Metering Valve with Flowsharing

Engine Assist by Recovering Swing Kinetic Energy

Hydraulic System Recovering Swing Kinetic and Boom Potential Energy

Integration of Swing Energy Recovery and Engine Anti-Idling Systems

Conserve Energy Through Independent Pump Control in a Hydraulic System

HYDRAULIC SYSTEM HAVING ENERGY RECOVERY

IMPLEMENT SYSTEM HAVING HYDRAULIC START ASSIST

MACHINE HAVING HYDRAULIC START ASSIST SYSTEM

MACHINE HAVING HYDRAULIC START ASSIST SYSTEM

Boom Cylinder Dig Flow Regeneration

HYBRID APPARATUS AND METHOD FOR HYDRAULIC SYSTEMS

APPARATUS AND METHOD FOR HYDRAULIC SYSTEMS

HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY KIT

HYDRAULIC ACCUMULATOR PRE-CHARGE PRESSURE DETECTION

Hydraulic Hybrid Boom System Hydraulic Transformer

Hydraulic Control System Having Relief Flow Capture

ENERGY RECOVERY SYSTEM FOR HYDRAULIC MACHINE

Method and Hydraulic Control System Having Swing Motor Energy Recovery

HYDRAULIC CONTROL SYSTEM FOR SWING MOTOR

HYDRAULIC CONTROL SYSTEM FOR SWING MOTOR

Energy Recovery Hydraulic System

ENERGY RECOVERY SYSTEM HAVING PEAK-SHAVING ACCUMULATOR

ENERGY RECOVERY SYSTEM HAVING INTEGRATED BOOM/SWING CIRCUITS

HYDRAULIC CONTROL SYSTEM HAVING ELECTRONIC FLOW LIMITING