Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857502 | Thermosensitive recording material | Keiichi Maruta, Hiroshi Yaguchi | 1989-08-15 |
| 4810612 | Heat-fixable electrophotographic toner composition | Toshihiro Sagane | 1989-03-07 |