Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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, Tomiaki Kurihara | 1983-03-29 |