Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6086191 | Method for cleaning an ink holding material | Toshiyuki Yano, Toshitake Yui, Akihiko Chujo, Ken Hashimoto, Yasuharu Endo | 2000-07-11 |
| 5441561 | Ink-jet recording ink and ink-jet recording methods thereof | Akihiko Chujo, Toshitake Yui, Ken Hashimoto, Yoshiro Yamashita, Fuminori Koide +1 more | 1995-08-15 |