Issued Patents 2023
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11705158 | Method for manufacturing ring-shaped glass spacer | Masao Takano | 2023-07-18 |
| 11682425 | Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer | Kinobu Osakabe, Yoshitake Tanno, Mikio Ikenishi | 2023-06-20 |
| 11640833 | Substrate for magnetic disk and magnetic disk | — | 2023-05-02 |