Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9090784 | Solid drawing material and solid drawing tool | Katsunori Kitazawa, Masaaki Matsumoto | 2015-07-28 |
| 6955491 | Marking pen with excellent cap-off performance | Takahiro Osada | 2005-10-18 |
| 6734233 | Solid adhesive composition | Takahiro Osada | 2004-05-11 |