Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6769966 | Workpiece holder for polishing, polishing apparatus and polishing method | Kouichi Okamura, Kouzi Morita, Hisashi Masumura | 2004-08-03 |
| 6135854 | Automatic workpiece transport apparatus for double-side polishing machine | Hisashi Masumura, Kiyoshi Suzuki, Syunichi Ogasawara | 2000-10-24 |
| 5554303 | Magnetic recording medium preparation | Hideo Kaneko, Katsushi Tokunaga, Yoshio Tawara, Yasuaki Nakazato | 1996-09-10 |