Pengfel Ma

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Naperville, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic control system having energy recovery
- Patent number 8,726,645
- Issue date May 20, 2014
- Caterpillar Inc.
- Tonglin Shang
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Force feedback poppet valve having an integrated pressure compensator
- Patent number 7,621,211
- Issue date Nov 24, 2009
- Caterpillar Inc.
- Pengfel Ma
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Force feedback poppet valve having an integrated pressure compensator
- Publication number 20080295508
- Publication date Dec 4, 2008
- Caterpillar Inc.
- Pengfel Ma
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING