Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5402863 | Apparatus to automatically adjust spring tension of an elevator brake to maintain brake torque | Masahide Okumura, Hiroyuki Ikejima | 1995-04-04 |
| 5137118 | Apparatus for controlling the opening and closing of electric doors | — | 1992-08-11 |
| 5086450 | Emergency intercommunication system for elevator | Shigeo Kitagawa, Kenzo Tachino, Yasuhiro Nagata, Tomoichiro Yamamoto, Terumi Hirabayashi +1 more | 1992-02-04 |
| 5085294 | Elevator control apparatus | — | 1992-02-04 |
| 5050709 | Elevator control apparatus | Masahide Okumura | 1991-09-24 |
| 5012899 | Apparatus for controlling an elevator | — | 1991-05-07 |
| 4984660 | Apparatus for controlling an elevator | Satomi Ikejima | 1991-01-15 |
| 4944369 | Safety device for elevator | — | 1990-07-31 |
| 4832159 | Elevator control apparatus | Satomi Ikejima | 1989-05-23 |
| 4817761 | Control apparatus for elevator | Hiroyuki Ikejima | 1989-04-04 |
| 4742892 | Control apparatus for elevator | — | 1988-05-10 |
| 4716517 | Apparatus for controlling an elevator | — | 1987-12-29 |
| 4691807 | Elevator control apparatus | — | 1987-09-08 |
| 4389631 | Elevator position detecting device | Ryuichi Kajiyama | 1983-06-21 |
| 4356896 | Elevator terminal deceleration system | Koichi Tamura, Ryuichi Kajiyama | 1982-11-02 |