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Patents Grantslast 30 patents

Information Patent Grant
Cutting elements with reduced variable back rake angle
- Patent number 12,011,773
- Issue date Jun 18, 2024
- CNPC USA Corporation
- Jiaqing Yu
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Cutting elements with increased curvature cutting edges
- Patent number 11,591,858
- Issue date Feb 28, 2023
- CNPC USA Corporation
- Jiaqing Yu
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Cutting Elements with Ridged and Inclined Cutting Face
- Publication number 20240093556
- Publication date Mar 21, 2024
- CNPC USA CORPORATION
- Jiaqing YU
- E21 - EARTH DRILLING MINING
Information Patent Application
Cutting Elements with Ridged and Inclined Cutting Face
- Publication number 20220003046
- Publication date Jan 6, 2022
- CNPC USA CORPORATION
- Jiaqing YU
- E21 - EARTH DRILLING MINING
Information Patent Application
Cutting Elements with Reduced Variable Back Rake Angle
- Publication number 20210370419
- Publication date Dec 2, 2021
- CNPC USA CORPORATION
- Jiaqing YU
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Cutting Elements with Increased Curvature Cutting Edges
- Publication number 20210180410
- Publication date Jun 17, 2021
- CNPC USA CORPORATION
- JIAQING YU
- E21 - EARTH DRILLING MINING