Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11152026 | Substrate for magnetic disks, and magnetic disk | — | 2021-10-19 |
| 11094345 | Magnetic-disk substrate, magnetic disk, and magnetic-disk drive device | Masanobu Itaya | 2021-08-17 |
| 11081134 | Hard disk drive with magnetic-disk substrate and hard disk drive with magnetic disk | Masanobu Itaya, Toshio Takizawa | 2021-08-03 |
| 11031036 | Non-magnetic substrate for magnetic disk, and magnetic disk | — | 2021-06-08 |
| 11031038 | Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer | Shinji Eda, Yoshitake Tanno, Mikio Ikenishi | 2021-06-08 |