Jianghe LUO

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Zhuzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Polycrystalline diamond compact drill bit and oil well drilling app...
- Patent number 11,053,743
- Issue date Jul 6, 2021
- SEED TECHNOLOGIES CORP., LTD.
- Jianghe Luo
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit nozzle and drill bit
- Patent number 10,975,628
- Issue date Apr 13, 2021
- SEED TECHNOLOGIES CORP., LTD.
- Yuehua Xu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit
- Patent number D875147
- Issue date Feb 11, 2020
- SEED TECHNOLOGIES CORP., LTD.
- Yuehua Xu
- D15 - Machines not elsewhere specified

Patents Applicationslast 30 patents

Information Patent Application
POLYCRYSTALLINE DIAMOND COMPACT DRILL BIT AND OIL WELL DRILLING APP...
- Publication number 20210017815
- Publication date Jan 21, 2021
- SEED TECHNOLOGIES CORP., LTD.
- Jianghe LUO
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILL BIT NOZZLE AND DRILL BIT
- Publication number 20190345775
- Publication date Nov 14, 2019
- SEED TECHNOLOGIES CORP., LTD.
- Yuehua XU
- E21 - EARTH DRILLING MINING