Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880666 | Method of manufacturing magnetic recording medium | Takeo Ito, Hajime Takeuchi, Minoru Hashimoto, Masumi Koishi | 1989-11-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880666 | Method of manufacturing magnetic recording medium | Takeo Ito, Hajime Takeuchi, Minoru Hashimoto, Masumi Koishi | 1989-11-14 |