Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5542501 | Apparatus for controlling an elevator to reduce vibrations created in a linear drive motor | Masanori Yasue | 1996-08-06 |
| 5441127 | Elevator control apparatus | Sigemi Iwata, Masayuki Yosida | 1995-08-15 |
| 5402863 | Apparatus to automatically adjust spring tension of an elevator brake to maintain brake torque | Masahide Okumura, Shigemi Iwata | 1995-04-04 |
| 5183980 | Linear motor elevator device with a null-flux position adjustment | Shigeru Okuma, Takeshi Furuhashi, Toshiaki Ishii | 1993-02-02 |
| 5174416 | Linear induction motor for elevator | Shigekazu Sakabe, Takehiko Kubota, Kazuhiko Sugita, Toshiaki Ishii | 1992-12-29 |
| 5158156 | Linear motor elevator with support wings for mounting secondary side magnets on an elevator car | Shigeru Okuma, Takeshi Furuhashi, Toshiaki Ishii | 1992-10-27 |
| 5141082 | Linear motor elevator system | Toshiaki Ishii, Hirosi Yosikawa, Kazuhiko Sugita, Shigekazu Sakabe, Hidehiko Sugimoto +2 more | 1992-08-25 |
| 4817761 | Control apparatus for elevator | Shigemi Iwata | 1989-04-04 |
| 4815567 | Apparatus for controlling an A.C. powered elevator | — | 1989-03-28 |
| 4719995 | Control apparatus for A.C. elevator | — | 1988-01-19 |
| 4681191 | Speed control apparatus for elevator | — | 1987-07-21 |
| 4625159 | Control apparatus for elevator | — | 1986-11-25 |
| 4516664 | Apparatus for controlling an A-C powered elevator | Nobuo Anzai | 1985-05-14 |
| 4482031 | AC elevator control apparatus | Masayuki Yoshida, Masami Nomura | 1984-11-13 |
| 4454930 | Apparatus for controlling an AC power elevator | Masami Nomura | 1984-06-19 |