Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12208636 | Multi-purpose acid-etched metallic stamps and dies | Yong Jia Chen | 2025-01-28 |
| 11602945 | Multi-purpose acid-etched metallic stamps and dies | Yong Jia Chen | 2023-03-14 |
| 10632735 | Multi-function heat foil embossing machine | Ji Chen | 2020-04-28 |
| 10118379 | Multi-function heat foil embossing machine | Ji Chen | 2018-11-06 |