Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5596706 | Highly reliable online system | Hiroyuki Shimazaki, Masamichi Mizoguchi, Kazuaki Ogawa, Shinji Tanaka, Tatsushi Yano +9 more | 1997-01-21 |
| 5379418 | Highly reliable online system | Hiroyuki Shimazaki, Masamichi Mizoguchi, Kazuaki Ogawa, Shinji Tanaka, Tatsushi Yano +9 more | 1995-01-03 |
| 5307481 | Highly reliable online system | Hiroyuki Shimazaki, Masamichi Mizoguchi, Kazuaki Ogawa, Shinji Tanaka, Tatsushi Yano +9 more | 1994-04-26 |
| 4953200 | Private branch exchange capable of discriminating different types of telephone sets connected thereto | — | 1990-08-28 |