Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4441584 | AC Elevator control system | Nobuo Mitsui, Yasuyuki Maeda, Seiya Shima, Takanobu Hatakeyama, Katsu Komuro | 1984-04-10 |
| 4387436 | Method and apparatus for detecting elevator car position | Yasunori Katayama, Takanobu Hatakeyama, Seiya Shima, Sadao Hokari, Toshiro Narita +3 more | 1983-06-07 |
| 4378059 | Abnormal elevator speed detector | Takanobu Hatakeyama, Yasunori Katayama, Sadao Hokari, Kanji Yoneda, Toshio Meguro | 1983-03-29 |
| 4367811 | Elevator control system | Kenji Yoneda, Kazuhiro Sakata, Takeo Yuminaka, Masao Nakazato, Soshiro Kuzunuki +1 more | 1983-01-11 |