Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4726072 | Double converter tuner | Sadahiko Yamashita, Makoto Hasegawa, Motoi Ohba, Yasumasa Watanabe | 1988-02-16 |
| 4661998 | Double superheterodyne tuner | Sadahiko Yamashita, Makoto Hasegawa, Motoi Ohba, Koh Kikuchi | 1987-04-28 |