Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8002860 | CMP abrasive, method for polishing substrate and method for manufacturing semiconductor device using the same, and additive for CMP abrasive | Naoyuki Koyama, Kouji Haga, Masato Yoshida, Toranosuke Ashizawa, Youiti Machii | 2011-08-23 |
| 7410409 | Abrasive compound for CMP, method for polishing substrate and method for manufacturing semiconductor device using the same, and additive for CMP abrasive compound | Naoyuki Koyama, Kouji Haga, Masato Yoshida, Toranosuke Ashizawa, Youiti Machii | 2008-08-12 |
| 6615499 | Method for producing cerium oxide, cerium oxide abrasive, method for polishing substrate using the same and method for manufacturing semiconductor device | Jun Matsuzawa, Atsushi Sugimoto, Masato Yoshida, Toranosuke Ashizawa, Yuuto Ootsuki | 2003-09-09 |