Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5043228 | Heat-sensitive transferring medium of delayed sending type | Takashi Yamahata | 1991-08-27 |
| 4948446 | Heat-sensitive transferring medium of delayed sending type | Takashi Yamahata | 1990-08-14 |
| 4567113 | Heat-sensitive transferring recording medium | Takashi Yamahata | 1986-01-28 |