Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11584864 | Aqueous ink, ink cartridge, ink jet recording method and method for producing aqueous ink | Katsuhiro Hayashi, Tsuyoshi Kasai, Naofumi Shimomura | 2023-02-21 |
| 11549027 | Aqueous ink, ink cartridge, ink jet recording method and method for producing aqueous ink | Naofumi Shimomura, Katsuhiro Hayashi, Tsuyoshi Kasai | 2023-01-10 |
| 9956761 | Ink, ink cartridge, and ink jet recording method | Yoshihisa Yamashita, Yuko Negishi, Ryuki Nanamiya | 2018-05-01 |