LYU; Yan
Patent Applications and Registrations
Patent applications and USPTO patent grants for LYU; Yan.The latest application filed is for "ultrasonic in-situ automatic detection system for creep cracks on inner wall of hydrogen production furnace tube".
- LYU; Yan - Beijing CN
- Lyu; Yan - Guanghan CN
Trademarks
| Patent | Date |
|---|---|
| Ultrasonic In-situ Automatic Detection System For Creep Cracks On Inner Wall Of Hydrogen Production Furnace Tube App 20220120713 - Cao; Luowei ; et al. | 2022-04-21 |
| Drilling machines and methods thereof Grant 11,299,942 - Chen , et al. April 12, 2 | 2022-04-12 |
| Drilling Machines And Methods Thereof App 20220098938 - CHEN; Chong ; et al. | 2022-03-31 |
| Pipe racking system Grant 11,286,731 - Li , et al. March 29, 2 | 2022-03-29 |
| Methods For Tripping A Drilling Rig Or A Workover Rig App 20220074275 - CHAI; Junqing ; et al. | 2022-03-10 |
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