Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6689303 | Injection molding method using a stacked mold | Nobuyuki Sugiyama, Shingo Ogawa, Naoki Oguro | 2004-02-10 |
| 6673138 | Multi-color crayon or oil pastel and method of producing the same | Yoshimi Kano | 2004-01-06 |