Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D277600 | Oil heater | Shuzo Sawa, Matafumi Ikeda, Akira Esaki | 1985-02-12 |
| D276363 | Oil heater | Shuzo Sawa, Matafumi Ikeda, Akira Esaki | 1984-11-13 |
| D276365 | Oil heater | Shuzo Sawa, Matafumi Ikeda, Akira Esaki | 1984-11-13 |
| D276366 | Oil heater | Shuzo Sawa, Matafumi Ikeda, Akira Esaki | 1984-11-13 |
| D255125 | Calculating machine | Matafumi Ikeda | 1980-05-27 |