Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5977855 | Molded transformer | Katsumi Matsumura, Yutaka Hirooka, Masayuki Mizushima, Ken-ichi Koyama, Yoshio Sugitatsu | 1999-11-02 |
| 5034854 | Encased transformer | Katsumi Matsumura, Yutaka Hirooka, Masayoshi Matsuda, Yoshihiro Kuniya | 1991-07-23 |