Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4668921 | Power supply circuit | — | 1987-05-26 |
| 4448746 | Process for producing alloy steel powder | Toshihiko Kubo, Minoru Ichidate, Isamu Karasuno, Masahide Umino | 1984-05-15 |
| 4437891 | Oil-atomized low-alloy steel powder | Masahide Umino, Isamu Karasuno, Minoru Ichidate, Toshihiko Kubo | 1984-03-20 |
| 4342966 | Power amplifier circuitry | — | 1982-08-03 |
| 4262260 | Tone control circuitry | — | 1981-04-14 |