Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872532 | Signal transmission method and system in elevator equipment | Hiromi Inaba, Masachika Yamazaki, Masato Suzuki, Yuzo Morita, Toshiki Kajiyama +2 more | 1989-10-10 |
| 4870556 | Method and apparatus for controlling power converter | Hiromi Inaba, Seiya Shima, Toshiaki Kurosawa, Mitsuyuki Hombu, Nobuo Mitsui | 1989-09-26 |
| 4829416 | Apparatus for controlling power transducers of the pulse width modulation (PWM) control type | Hiromi Inaba, Seiya Shima, Sadao Hokari, Hideaki Takahashi, Shigeta Ueda | 1989-05-09 |