Zhongtian HAO

Follow

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Horizontal-to-vertical drilling module for deep well
- Patent number 11,028,658
- Issue date Jun 8, 2021
- China National Offshore Oil Corporation
- Yongren Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
High-pressure fluid mixing pump control system and fluid suction co...
- Patent number 10,208,736
- Issue date Feb 19, 2019
- China National Offshore Oil Corporation
- Yongren Feng
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
Horizontal-to-Vertical Drilling Module for Deep Well
- Publication number 20200291735
- Publication date Sep 17, 2020
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongren FENG
- E21 - EARTH DRILLING MINING
Information Patent Application
High-Pressure Fluid Mixing Pump Control System and Fluid Suction Co...
- Publication number 20160097377
- Publication date Apr 7, 2016
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongren FENG
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...