Issued Patents 2021
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11192380 | Ink bottle and bottle set | Taku Ishizawa, Tadahiro Mizutani, Ryoichi Tanaka, Koichi Toba, Takumi Nagashima +3 more | 2021-12-07 |
| 11179944 | Ink refill container, ink refill system, and ink refill adapter | Tadahiro Mizutani, Ryoichi Tanaka, Makoto Kobayashi, Naomi Kimura, Hideki Okumura +3 more | 2021-11-23 |
| 11007787 | Ink refill container and ink refill system | Tadahiro Mizutani, Taku Ishizawa, Noriyuki Fukasawa, Naomi Kimura, Shoma Kudo | 2021-05-18 |
| 10889123 | Ink refill container, ink refill system, and ink refill adapter | Tadahiro Mizutani, Ryoichi Tanaka, Makoto Kobayashi, Naomi Kimura, Hideki Okumura +3 more | 2021-01-12 |