Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5062890 | Water-based ink composition for ball-point pen | Hiroshi Miyashita, Hideotoshi Hamamoto, Makoto Yamaguchi, Onuki Isao, Hiroshi Takahashi +1 more | 1991-11-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5062890 | Water-based ink composition for ball-point pen | Hiroshi Miyashita, Hideotoshi Hamamoto, Makoto Yamaguchi, Onuki Isao, Hiroshi Takahashi +1 more | 1991-11-05 |