Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6976910 | Polishing pad | Hiroshi Shiho, Kou Hasegawa, Nobuo Kawahashi | 2005-12-20 |
| 6848974 | Polishing pad for semiconductor wafer and polishing process using thereof | Kou Hasegawa | 2005-02-01 |