Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888066 | Method for producing grain-oriented electrical steel sheet with very high magnetic flux density | Yasunari Yoshitomi, Takeo Nagashima, Kenichi Yakashiro | 1989-12-19 |
| 4824493 | Process for producing a grain-oriented electrical steel sheet having improved magnetic properties | Yasunari Yoshitomi | 1989-04-25 |