Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4769046 | Process for polishing surface of memory hard disc | Takashi Baba | 1988-09-06 |
| 4705566 | Polishing composition for memory hard disc | Takashi Baba | 1987-11-10 |
| 4225349 | Compositions for polishing synthetic resin | Isamu Koshiyama | 1980-09-30 |