Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11680659 | Electrically driven actuator for opening and closing valve, and method for driving electrically driven actuator for opening and closing valve | Naritoyo Shibata, Hidekazu Shitamichi | 2023-06-20 |
| 8839914 | Elevator system including fire evacuation priority | Masafumi Iwata, Masahiko Konishi, Kiyoji Kawai, Toshiyuki Kodera | 2014-09-23 |
| 6321876 | Control operation system for elevator with flood speed detector and controller | Kiyoji Kawai | 2001-11-27 |