Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12319065 | Ink refill container | Tadahiro Mizutani, Yoshihiro Koizumi, Taku Ishizawa, Shun Oya, Tadashi Watanabe | 2025-06-03 |
| 11724507 | Ink refilling container | Noriyuki Fukasawa, Tadashi Watanabe | 2023-08-15 |
| 11052668 | Liquid container | Tadahiro Mizutani, Taku Ishizawa | 2021-07-06 |