Junlong DU

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Yantai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Fracturing device, engine and exhaust apparatus thereof
- Patent number 12,345,172
- Issue date Jul 1, 2025
- Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Xiaolei Ji
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Turbine engine air intake system and cabin
- Patent number 12,292,067
- Issue date May 6, 2025
- Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Junlong Du
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
POWER TRANSMISSION SYSTEM AND TURBINE FRACTURING DEVICE HAVING SAME
- Publication number 20250237202
- Publication date Jul 24, 2025
- YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.
- Rikui ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
Fracturing Device
- Publication number 20250101969
- Publication date Mar 27, 2025
- YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.
- Junlong DU
- E21 - EARTH DRILLING MINING
Information Patent Application
Fracturing Device, Engine and Exhaust Apparatus Thereof
- Publication number 20230374916
- Publication date Nov 23, 2023
- YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.
- Xiaolei JI
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Turbine Engine Air Intake System and Cabin
- Publication number 20230003238
- Publication date Jan 5, 2023
- YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.
- Junlong DU
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...