Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851982 | Apparatus for controlling an A.C. powered elevator | — | 1989-07-25 |
| 4816985 | Apparatus for controlling an alternating current power supply | — | 1989-03-28 |
| 4745991 | Speed control apparatus for A.C. elevator | — | 1988-05-24 |
| 4721188 | Control apparatus for A.C. elevator | Hiroshi Araki | 1988-01-26 |
| 4671389 | Speed control apparatus for an elevator | — | 1987-06-09 |
| 4629035 | Speed control apparatus for elevator | Toshiaki Ishii, Shuzo Mitsui | 1986-12-16 |
| 4625834 | Speed control apparatus for elevator | — | 1986-12-02 |
| 4624343 | Speed control apparatus for elevator | Yoshio Miyanishi | 1986-11-25 |
| 4576253 | Velocity control apparatus for an elevator | Isao Tadenuma | 1986-03-18 |