Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884184 | Control apparatus for cascaded converter circuit | Toshiaki Okuyama, Mitsugu Matsutake, Junichi Takahashi, Masami Ito | 1989-11-28 |
| 4808903 | Vector control system for induction motors | Toshiaki Okuyama, Takashi Sukegawa, Junichi Takahashi | 1989-02-28 |