Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4509143 | Computer control system for selecting a desired control program from a plurality of control programs | Shinobu Tajima, Yasukazu Umeda | 1985-04-02 |
| 4483418 | Elevator control system | Yasukazu Umeda, Shinobu Tajima | 1984-11-20 |
| 4410959 | Computer control system for selecting a desired control program from a plurality of control programs | Shinobu Tajima, Yasukazu Umeda | 1983-10-18 |
| 4402387 | Elevator control system | Shintaro Tsuji | 1983-09-06 |
| 4244450 | Group supervisory system of elevator cars | Yasukazu Umeda, Seiichi Goto, Shintaro Tsuji, Yoshio Miyanishi | 1981-01-13 |