Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4946374 | Magnetic recording medium | Satoru Yamaguchi, Jozo Shimizu, Haruo Andoh | 1990-08-07 |
| 4624883 | Magnetic recording medium | Satoru Yamaguchi, Jozo Shimizu, Haruo Andoh | 1986-11-25 |