Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855175 | Magnetic recording medium and production thereof | Kunio Wakai, Noboru Isoe | 1989-08-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855175 | Magnetic recording medium and production thereof | Kunio Wakai, Noboru Isoe | 1989-08-08 |