Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4870556 | Method and apparatus for controlling power converter | Hiromi Inaba, Seiya Shima, Toshiaki Kurosawa, Toshimitsu Tobita, Mitsuyuki Hombu | 1989-09-26 | $38,000 |
| 4833586 | PWM control for power converter system utilizing pulse dropping at minimum pulse widths | Hiromi Inaba, Seiya Shima, Takeki Ando, Toshiaki Kurosawa | 1989-05-23 | $36,000 |
| 4779709 | Apparatus for controlling AC elevators | Yoshio Sakai, Masao Nakazato, Mitsuyuki Honbu, Shigeta Ueda, Seiya Shima +5 more | 1988-10-25 | $104,000 |
| 4441584 | AC Elevator control system | Yasuyuki Maeda, Tomiaki Kurihara, Seiya Shima, Takanobu Hatakeyama, Katsu Komuro | 1984-04-10 | $78,000 |