Issued Patents 2022
Showing 1–3 of 3 patents
| 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 |