Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863531 | Method for producing a grain-oriented electrical steel sheet having a low watt loss | Toshiya Wada, Osamu Tanaka, Takatoshi Egawa, Makoto Yoshida, Seizun Higuchi | 1989-09-05 |
| 4846939 | Method for producing a grain-oriented electrical steel sheet having an ultra low watt loss | Makoto Yoshida, Seijun Higuchi, Osamu Tanaka | 1989-07-11 |
| 4800134 | High corrosion resistant plated composite steel strip | Makoto Yoshida, Masami Osawa, Seijun Higuchi, Akinori Maruta | 1989-01-24 |