Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D294830 | Transmitter used for alarm display processor | Nobuhiro Umehara | 1988-03-22 |
| D294232 | Alarm display processor | Nobuhiro Umehara | 1988-02-16 |
| 4414559 | Semiconductor thyristor device with laterally displaced auxiliary and main cathode regions | — | 1983-11-08 |
| 4399452 | Explosion-proof semiconductor device | Kazuyuki Nakashima, Youichi Araki, Shinjiro Kojima | 1983-08-16 |