Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11518178 | Rotary printing integrated ink box for seal printing | Haiming Sang, Song Li | 2022-12-06 |
| 11474758 | Intelligent seal with cloud computing-based anti-forgery capability, enables printing the seal with degree rotation which improving printing speed and efficiency | Haiming Sang, Song Li | 2022-10-18 |
| 11390069 | Seal printer | Haiming Sang, Song Li | 2022-07-19 |
| 8058858 | High efficiency voltage regulator with auto power-save mode | — | 2011-11-15 |
| 7800351 | High efficiency voltage regulator with auto power-save mode | — | 2010-09-21 |
| 7279875 | High switching frequency DC-DC converter with fast response time | Steven Huynh | 2007-10-09 |