P

Inventor

MA PENGFEI

US55 patents
⚠️ This page may combine multiple inventors who share the name “MA PENGFEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CATERPILLAR INC

27 patents
US7908852B2Mar 22, 2011

Control system for recovering swing motor kinetic energy

CATERPILLAR INC57 citations95
US7059126B2Jun 13, 2006

System for preventing swing wag for a work machine with a boom assembly

CATERPILLAR INC21 citations92
US9809958B2Nov 7, 2017

Engine assist by recovering swing kinetic energy

CATERPILLAR INC7 citations84
US9945396B2Apr 17, 2018

Fluid systems for machines with integrated energy recovery circuit

CATERPILLAR INC10 citations83
US9290912B2Mar 22, 2016

Energy recovery system having integrated boom/swing circuits

CATERPILLAR INC15 citations83
US9091286B2Jul 28, 2015

Hydraulic control system having electronic flow limiting

CATERPILLAR INC7 citations83
US9618014B2Apr 11, 2017

Implement system having hydraulic start assist

CATERPILLAR INC12 citations82
US9086061B2Jul 21, 2015

Energy recovery hydraulic system

CATERPILLAR INC14 citations82
US9829014B2Nov 28, 2017

Hydraulic system including independent metering valve with flowsharing

CATERPILLAR INC17 citations80
US10337532B2Jul 2, 2019

Split spool valve

CATERPILLAR INC7 citations79
US7735517B2Jun 15, 2010

Rotary-actuated electro-hydraulic valve

CATERPILLAR INC17 citations77
US9556591B2Jan 31, 2017

Hydraulic system recovering swing kinetic and boom potential energy

CATERPILLAR INC5 citations73
US9458604B2Oct 4, 2016

Hybrid apparatus and method for hydraulic systems

CATERPILLAR INC5 citations73
US9290911B2Mar 22, 2016

Energy recovery system for hydraulic machine

CATERPILLAR INC6 citations72
US7302797B2Dec 4, 2007

Hydraulic system having a post-pressure compensator

CATERPILLAR INC7 citations72
US9951795B2Apr 24, 2018

Integration of swing energy recovery and engine anti-idling systems

CATERPILLAR INC5 citations71
US9745940B2Aug 29, 2017

Machine having hydraulic start assist system

CATERPILLAR INC5 citations71
US9261118B2Feb 16, 2016

Boom cylinder dig flow regeneration

CATERPILLAR INC4 citations68
US11430319B1Aug 30, 2022

Cavitation detection system

CATERPILLAR INC4 citations64
US12286986B2Apr 29, 2025

Method for monitoring operation of a hydraulic system

CATERPILLAR INC0 citations62
US9388829B2Jul 12, 2016

Hydraulic control system having swing motor energy recovery

CATERPILLAR INC2 citations61
US7905089B2Mar 15, 2011

Actuator control system implementing adaptive flow control

CATERPILLAR INC6 citations60
US12534879B1Jan 27, 2026

Hydraulic pump with de-stroke control

CATERPILLAR INC0 citations56
US9328744B2May 3, 2016

Hydraulic control system having swing energy recovery

CATERPILLAR INC1 citations51
US11719265B2Aug 8, 2023

Cooler bypass valve assembly for hydraulic system return circuit

CATERPILLAR INC1 citations50
US9897120B2Feb 20, 2018

Hydraulic system having energy recovery

CATERPILLAR INC0 citations48
US11572925B2Feb 7, 2023

Brake slack adjuster having sensing piston with orifice and systems, components, and methods thereof

CATERPILLAR INC0 citations45

CATERPILLAR MITSUBISHI LTD

7 patents

ZHANG JIAO

4 patents

MA PENGFEI

3 patents

CATERPILLAR GLOBAL MINING LLC

2 patents

CHEN DAYAO

2 patents

HUAWEI TECH CO LTD

2 patents

EMPIRE TECHNOLOGY DEV LLC

1 patent

KERCKHOVE PHILIPPE VANDE

1 patent

GUANGZHOU AOSONG ELECTRONIC CO LTD

1 patent

Showing the top 50 of 55 patents by PatentIndex Score.