Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824751 | Toners for electrophotographic process containing chromium complex salts | Toshihiko Matuura, Kenzi Sawaki, Michiko Torigoe | 1989-04-25 |
| 4795690 | Toners for electrophotographic process containing a phenolic compound | Hiroomi Hosoi, Masaki Shinmoto | 1989-01-03 |