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 | Kiyomi Ema, Isao Ota, Tohru Nishimura | 2002-08-27 |
| 6372003 | Polishing abrasive of crystalline ceric oxide particles having surfaces modified with hydroxyl groups | Isao Ota, Takao Kaga, Tohru Nishimura, Kenji Tanimoto | 2002-04-16 |
| 6350978 | Deterioration sensing device for light-emitting diode | — | 2002-02-26 |