Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5539564 | Point-to-multipoint optical transmission system | Kiyomi Kumozaki, Noriki Miki, Ryuichi Watanabe, Shinichi Aoyagi, Yasuyuki Okumura +1 more | 1996-07-23 |
| 4984262 | Digital service unit | Kiyomi Kumozaki, Ryoichi Komiya | 1991-01-08 |
| 4833691 | Line equalizer | Hiroshi Takatori, Osamu Matsuhara | 1989-05-23 |
| 4507721 | DC-DC Converter for remote power feeding | Haruo Ogiwara | 1985-03-26 |