Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10125283 | Ink, ink cartridge, and ink jet recording method | Yojiro Kojima, Yuko Negishi | 2018-11-13 |
| 10022981 | Ink, ink cartridge, and ink jet recording method | Fumiaki Fujioka, Yuko Negishi | 2018-07-17 |
| 9956761 | Ink, ink cartridge, and ink jet recording method | Yuko Negishi, Ryuki Nanamiya, Toshiyuki Umesato | 2018-05-01 |