Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5272758 | Electret condenser microphone unit | Mamoru Yasuda, Kouji Nishikawa, Toshirou Izuchi, Kazuo Ono, Kiyoshi Ohta | 1993-12-21 |
| 4385473 | Method for frequency regulation of tuning-fork vibrator | Shigeo Aoki, Junichi Tamamura, Tatsuo Nagayoshi, Masaru Yasui, Susumu Hirao | 1983-05-31 |
| 4382659 | Liquid crystal display device | Shigeo Aoki, Motomi Hosoda, Yasuhiro Ukai, Tatsuo Nagayoshi | 1983-05-10 |