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 | Osamu Tanaka, Takatoshi Egawa, Makoto Yoshida, Seizun Higuchi, Teruaki Izaki | 1989-09-05 |
| 4863532 | Grain-oriented electromagnetic steel sheet | Katsuro Kuroki, Shozaburo Nakashima | 1989-09-05 |
| 4806176 | Process for producing a grain-oriented electromagnetic steel sheet having a high magnetic flux density | Jiro Harase, Katsuro Kuroki, Shozaburo Nakashima | 1989-02-21 |