Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9546074 | Elevator apparatus including an anomalous acceleration detecting mechanism | Kenichi Okamoto, Mineo Okada | 2017-01-17 |
| 9505587 | Elevator with acceleration detection | Mineo Okada, Kenichi Okamoto | 2016-11-29 |
| 7637357 | Elevator apparatus with sheave rotational speed difference determination for detecting an abnormality | Hiroyuki Nakagawa, Koei Matsukawa, Eiji Ando, Atsushi Mitsui | 2009-12-29 |
| 6360847 | Elevator system and speed governing apparatus | Mineo Okada | 2002-03-26 |
| 5864104 | Elevator door control apparatus | Masanori Tawada | 1999-01-26 |
| 5636715 | Elevator door structure and method of adjusting the same | Masami Yoshikawa | 1997-06-10 |
| 5165505 | Elevator landing door apparatus | Masami Yoshikawa, Makoto Tomidokoro, Yoshinari Kuzuya | 1992-11-24 |
| 5156237 | Elevator landing door apparatus | Masami Yoshikawa, Makoto Tomidokoro, Masaaki Murakami, Tetsuro Ogushi, Yutaka Noda | 1992-10-20 |