Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12379359 | Methods, apparatuses, and systems for calibrating gas detecting apparatuses | Xiangcai He, Li Liu, Yong-Fa Wang | 2025-08-05 |
| 12313610 | Method and system for calibrating a gas detector | Jianli Liu, Li Liu | 2025-05-27 |
| 11982658 | Methods, apparatuses, and systems for calibrating gas detecting apparatuses | Xiangcai He, Li Liu, Yong-Fa Wang | 2024-05-14 |
| 11977061 | Method and system for calibrating a gas detector | Jianli Liu, Li Liu | 2024-05-07 |
| 11821822 | Methods, apparatuses and systems for liquid substance vaporization and concentration level determination | Li Liu, Yawei Zhang, Guidi Li | 2023-11-21 |
| 9719826 | Mass flow primary with exciter | Xianyong Fan, Guokun Song | 2017-08-01 |
| 9587971 | Dual E-shaped high frequency exciter | Xianyong Fan, Guokun Song | 2017-03-07 |
| 4820453 | Water level detector and circuit for an electric humidifier | — | 1989-04-11 |