Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5622550 | Yellow ink composition for ink-jet printing and image recording method using the same | Akiko Konishi, Kiyofumi Nagai | 1997-04-22 |
| 5618935 | Tricyclic pyrazine compound and electrophotographic photoconductor comprising the same | Masayuki Shoshi, Yumi Ichikawa, Kaoru Teramura, Megumi Kawahara | 1997-04-08 |