Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6779881 | Ink, ink set, and ink jet recording method | Jun Ito | 2004-08-24 |
| 6719833 | Recording medium, and image forming method and recorded matter using same | Masahiro Hanmura, Hiroyuki Onishi, Hiroko Hayashi | 2004-04-13 |
| 6712462 | Ink set and ink jet recording method | Jun Ito | 2004-03-30 |
| 6596065 | Black ink set and ink jet recording method using the same | Jun Ito | 2003-07-22 |
| 6596378 | Recording medium and aqueous ink composition | Masahiro Hanmura, Hiroyuki Onishi, Hiroko Hayashi | 2003-07-22 |
| 6514330 | Ink composition containing copper complex colorant | Kyoichi Oka, Kazuaki Watanabe | 2003-02-04 |
| 6482256 | Ink sets | Jun Ito, Hiroshi Fukumoto | 2002-11-19 |
| 6454844 | Ink set | — | 2002-09-24 |
| 6379441 | Ink composition realizing images with excellent light resistance and ink set | Jun Ito | 2002-04-30 |
| 5985015 | Ink composition for ink jet recording and ink set | — | 1999-11-16 |
| 5948154 | Color ink set for ink-jet recording | Hiroko Hayashi, Etsuko Yoshiike, Yoshiyuki Koike, Yasuhiro Ouki, Akio Owatari | 1999-09-07 |
| 5795970 | Mixed disazo-dye composition and black aqueous ink composition containing the same that provides high grade image on print | Takashi Ono, Tatsuya Yagyu, Yoshihiro Sawatari, Masaki Sasaki, Hiroko Hayashi +2 more | 1998-08-18 |
| 5753016 | Ink composition excellent in reproduction of black color and ink jet recording method using the same | Hiroko Hayashi, Yasuhiro Ouki, Akio Owatari | 1998-05-19 |
| 5704969 | Aqueous ink composition and method of recording using the same | Akio Owatari | 1998-01-06 |
| 5647897 | Ink composition for ink jet recording | Yasuhiro Ouki, Hiroko Hayashi, Kiyohiko Takemoto, Masaaki Itano | 1997-07-15 |
| 5616174 | Ink composition and ink jet recording method using the same | Akio Owatari, Junko Takatsuna, Masahiro Yatake, Hiroko Hayashi, Takashi Ono +2 more | 1997-04-01 |