Issued Patents 2025
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12344749 | Water-based composition and coloring method | Kei Hiruma, Tomoyuki Ushiyama | 2025-07-01 |
| 12305046 | Ink jet ink composition and ink jet printing method | Kei Hiruma, Tomoyuki Ushiyama, Kenta TSUKADA | 2025-05-20 |
| 12291641 | Metal pigment composition and coloring method | Hiroaki Kida, Shintaro ASAI, Kei Hiruma, Tomoyuki Ushiyama, Kenta TSUKADA | 2025-05-06 |
| 12264250 | Coloring composition and coloring method | Shintaro ASAI, Hiroaki Kida, Kei Hiruma, Tomoyuki Ushiyama, Kenta TSUKADA | 2025-04-01 |