Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4946374 | Magnetic recording medium | Satoru Yamaguchi, Kozaburoh Satoh, Haruo Andoh | 1990-08-07 |
| 4722863 | Magnetic recording medium | Toshihiko TANABE, Kozaburo Sato | 1988-02-02 |
| 4624883 | Magnetic recording medium | Satoru Yamaguchi, Kozaburoh Satoh, Haruo Andoh | 1986-11-25 |
| 4349608 | Magnetic recording medium | Satoru Yamaguchi, Shigeo Aoyama | 1982-09-14 |
| 4275113 | Magnetic recording medium | Osamu Saito, Hiroshi Zaitsu | 1981-06-23 |