Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11174528 | Oil-immersion quenching cooling precursor and oil-immersion quenching cooling method | Kejian Zhang, Xuezhi Hao, Shengdong Ge | 2021-11-16 |
| 9546737 | Solenoid valve | James Wang | 2017-01-17 |
| 5883862 | Clock having emergency lighting device | — | 1999-03-16 |