Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837109 | Method of producing neodymium-iron-boron permanent magnet | Masaaki Tokunaga, Akitoshi Hiraki | 1989-06-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837109 | Method of producing neodymium-iron-boron permanent magnet | Masaaki Tokunaga, Akitoshi Hiraki | 1989-06-06 |