Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6440187 | Alumina powder, process for producing the same and polishing composition | Toshio Kasai, Kiyomi Ema, Isao Ota | 2002-08-27 |
| 6398827 | Polishing composition | Isao Ota, Yoshitane Watanabe, Yoshiyuki Kashima, Kiyomi Ema, Yutaka Ohmori | 2002-06-04 |
| 6372003 | Polishing abrasive of crystalline ceric oxide particles having surfaces modified with hydroxyl groups | Toshio Kasai, Isao Ota, Takao Kaga, Kenji Tanimoto | 2002-04-16 |