Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12139623 | Oil-based ink composition for writing board and marking pen incorporating same | — | 2024-11-12 |
| 7297730 | Ballpoint-pen ink compositions | Tetsuya Hattori | 2007-11-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12139623 | Oil-based ink composition for writing board and marking pen incorporating same | — | 2024-11-12 |
| 7297730 | Ballpoint-pen ink compositions | Tetsuya Hattori | 2007-11-20 |