Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285028 | Group control method and apparatus for elevators for assignment of coincident calls | Yasukazu Umeda, Shintaro Tsuji, Koji Takeshima, Hidenobu Nakashima | 1994-02-08 |
| 4653611 | Elevator control apparatus | Kazutoshi Ohta | 1987-03-31 |
| 4447044 | Clutching and braking control for hydraulically driven crane winches | — | 1984-05-08 |
| 4297477 | Polyamide having --NH--(CH.sub.2).sub.4 --CH(NRR')--CO--units | Haruyo Sato, Shinzo Imamura | 1981-10-27 |