Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5226222 | Fabrication method for transformers with an amorphous core | Katsumi Hanaoka, Masatake Hirai, Masatake Kokado, Takeshi Uchikura, Syoichi Shii +7 more | 1993-07-13 |
| 4972573 | Method of manufacturing wound transformer cores | Yasuo Yamamoto, Katsumi Hanaoka, Masatake Hirai, Masatake Kokado | 1990-11-27 |
| 4637563 | Toroidal winding apparatus | Kazuhiro Arii, Teruaki Tanaka, Kouhei Arisaka | 1987-01-20 |
| 4631509 | Electrical induction apparatus with support inside casing | Kazuhiro Arii, Yasuo Yamamoto, Katsumi Hanaoka, Kazuhiro Tanaka | 1986-12-23 |