Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11425921 | Dried food fresh-keeping packaging bag structure | Yi-An Chien | 2022-08-30 |
| 10865029 | Packaging bag fresh-keeping exhaust valve structure | Yi-An Chien | 2020-12-15 |
| 10766668 | Dried food fresh-keeping packaging bag structure | Yi-An Chien | 2020-09-08 |