Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5919294 | Recording liquid | Takashi Hirasa, Masahiro Yamada | 1999-07-06 |
| 5738714 | Recording liquid | Takashi Hirasa, Hiroshi Takimoto, Katsuji Honda | 1998-04-14 |
| 5547498 | Easily dispersible coloring carbon black and process for preparing an ink | Akinori Sakaue, Nobutake Mise | 1996-08-20 |
| 4808395 | High-quality coloring carbon black and process for its production | Shushichi Yoshimura, Hiromu Kobayashi, Hozo Yamazaki | 1989-02-28 |