Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454054 | Elevator with separated speed governor and position detector | Masao Shibata, Ichirou Satou | 2002-09-24 |
| 5233292 | Speed detector device for elevator | Yasuhiro Nagata | 1993-08-03 |
| 5086450 | Emergency intercommunication system for elevator | Shigeo Kitagawa, Kenzo Tachino, Yasuhiro Nagata, Tomoichiro Yamamoto, Shigemi Iwata +1 more | 1992-02-04 |
| 5074385 | Call registration apparatus in an elevator system | Hideyo Ujihara | 1991-12-24 |
| 5019960 | Master-slave signal transfer system for elevator | Hiroshi Ando | 1991-05-28 |
| 5018604 | Apparatus for transmitting signal for group supervision of elevators | — | 1991-05-28 |
| 4858727 | Apparatus and method for transmitting signal for elevator | — | 1989-08-22 |
| 4846310 | Signal transmission apparatus for elevator | — | 1989-07-11 |
| 4778035 | Cage position display apparatus for an elevator | — | 1988-10-18 |
| 4639912 | Signal transmission apparatus | — | 1987-01-27 |