Ketao Cai

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Deyang, CN

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Patents Grantslast 30 patents

Information Patent Grant
Multifunctional rotary blowout preventer test device and method the...
- Patent number 12,163,856
- Issue date Dec 10, 2024
- Sichuan Hongda Security Technology Service Co., Ltd
- Shundong Tang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Choke combination device for gas production
- Patent number 12,038,096
- Issue date Jul 16, 2024
- Sichuan Hongda Security Technology Service Co., Ltd
- Yonggang Deng
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...