Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6126280 | Ink recording method | Ken Hashimoto, Izuru Matsui, Toshitake Yui | 2000-10-03 |
| 5462590 | Ink-jet ink and method of printing using the same | Toshitake Yui, Yoshiro Yamashita, Akihiko Chujo, Ken Hashimoto | 1995-10-31 |
| 5441561 | Ink-jet recording ink and ink-jet recording methods thereof | Akihiko Chujo, Toshitake Yui, Ken Hashimoto, Yoshiro Yamashita, Yasuharu Endo +1 more | 1995-08-15 |
| 5431722 | Ink for inkjet printing | Yoshiro Yamashita, Toshitake Yui, Akihiko Chujo, Ken Hashimoto | 1995-07-11 |
| 5382283 | Ink containing propylene oxide/ethylene oxide block copolymers for ink jet recording | Toshitake Yui, Ken Hashimoto, Yoshiro Yamashita, Akihiko Chujo | 1995-01-17 |
| 5370731 | Ink for thermal ink jet recording | Yoshiro Yamashita, Toshitake Yui, Akihiko Chujo, Ken Hashimoto | 1994-12-06 |
| 4634257 | Electrostatic printing method | Masaki Yoshino, Kozo Oka | 1987-01-06 |