Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868086 | Electrographic toner and process for preparation thereof | Shoji Ohtani, Yukiya Sato, Kazunari Takemura | 1989-09-19 |
| 4795792 | Process for preparing particles of olefin-maleic anhydride copolyer | Shoji Ohtani, Yoshiyuki Muroi | 1989-01-03 |