Guiqing HAO

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Wire follow-up protection structure of electric reducer
- Patent number 10,236,667
- Issue date Mar 19, 2019
- China National Offshore Oil Corporation
- Yongren Feng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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...
Information Patent Grant
System for sampling from formation while drilling
- Patent number 10,180,064
- Issue date Jan 15, 2019
- China National Offshore Oil Corporation
- Yongren Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling type sidewall coring apparatus
- Patent number 10,018,038
- Issue date Jul 10, 2018
- China National Offshore Oil Corporation
- Yongren Feng
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DATA ACQUISITION METHOD AND APPARATUS
- Publication number 20210323575
- Publication date Oct 21, 2021
- BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.
- Pengfei WEI
- B60 - VEHICLES IN GENERAL
Information Patent Application
WIRE FOLLOW-UP PROTECTION STRUCTURE OF ELECTRIC REDUCER
- Publication number 20180323589
- Publication date Nov 8, 2018
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongren Feng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Drilling Type Sidewall Coring Apparatus
- Publication number 20170107813
- Publication date Apr 20, 2017
- CHINA OILFIELD SERVICES LIMITED
- Yongren FENG
- E21 - EARTH DRILLING MINING
Information Patent Application
System for Sampling from Formation While Drilling
- Publication number 20160362977
- Publication date Dec 15, 2016
- 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...