Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9862863 | Polishing composition and method for polishing magnetic disk substrate | Akira SUGAWA | 2018-01-09 |
| 9856401 | Polishing composition and method for polishing magnetic disk substrate | Akira SUGAWA | 2018-01-02 |