Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4675075 | Magnetic recording production processes | Yusaku Sakai, Yoshito Kitamoto, Shinji Ohtaki, Yasushi Tamaki | 1987-06-23 |
| 4664963 | Magnetic recording medium and production processes thereof | Yusaku Sakai, Yoshito Kitamoto, Shinji Ohtaki, Yasushi Tamaki | 1987-05-12 |