Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862195 | Overcoating layer for thermal printing head | — | 1989-08-29 |
| 4845339 | Thermal head containing an insulating, heat conductive layer | — | 1989-07-04 |
| 4825040 | Thermal head | — | 1989-04-25 |
| 4795921 | Logic operation-oscillation circuit | Koichi Futsuhara | 1989-01-03 |