Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4565918 | Heating circuit for a thermal recording-pen | Takeshi Toyosawa, Shigeo Ikeda, Ken-Ichiro Ohta | 1986-01-21 |
| 4297714 | Thermal pen | Kazunari Ando, Hirokazu Matsunaga | 1981-10-27 |