Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6440187 | Alumina powder, process for producing the same and polishing composition | Toshio Kasai, Isao Ota, Tohru Nishimura | 2002-08-27 |
| 6398827 | Polishing composition | Isao Ota, Tohru Nishimura, Yoshitane Watanabe, Yoshiyuki Kashima, Yutaka Ohmori | 2002-06-04 |