Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6673138 | Multi-color crayon or oil pastel and method of producing the same | Koji Seki | 2004-01-06 |
| 6042940 | Solid adhesive | Koji Seki, Atsushi Kaneko | 2000-03-28 |
| 5832919 | Portable inflatable enclosure system with filtered positive pressure gas fed therein | Isao Yamada | 1998-11-10 |
| 5725642 | Solid painting material | Koji Seki | 1998-03-10 |
| 5236494 | Solid painting material | — | 1993-08-17 |