Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11450344 | Magnetic recording medium, magnetic recording and reproducing device, and e-iron oxide powder | Kenji Naoi | 2022-09-20 |
| 4686043 | Batch type filter system | Yasunori Iriyama, Mitsumasa Hirose | 1987-08-11 |