Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7867060 | Retainer ring used for polishing a structure for manufacturing magnetic head, and polishing method using the same | Hiroki Aritomo, Akira Miyasaka, Youji Hirao | 2011-01-11 |