Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9062225 | Production process for colorant, colorant composition, toner, ink for ink jet recording and color filter | Keiko Ishidai | 2015-06-23 |
| 8846965 | Toner for electrophotography and metal-containing compound | Keiko Ishidai, Issei Nakahara | 2014-09-30 |
| 8729285 | Copper complex compound and electrophotographic toner containing the same | Koji Daifuku, Ryohei Iwamoto, Keiko Ishidai, Kaori Ono, Issei Nakahara | 2014-05-20 |
| 8329368 | Electrophotographic toner | Koji Daifuku, Ryohei Iwamoto, Keiko Ishidai, Kaori Ono, Issei Nakahara | 2012-12-11 |
| 8269018 | Pyrazolotriazole compound and electrophotographic toner | Ryohei Iwamoto, Koji Daifuku, Keiko Ishidai, Kaori Ono, Issei Nakahara | 2012-09-18 |
| 7943279 | Copper complex compound and electrophotographic toner containing the same | Koji Daifuku, Ryohei Iwamoto, Keiko Ishidai, Kaori Ono, Issei Nakahara | 2011-05-17 |
| 7390840 | Active ray curable composition, active ray curable ink, image forming method and inkjet recording apparatus utilizing the same | Masato Nishizeki, Norio Miura, Takeshi Kurata | 2008-06-24 |
| 7360883 | Active ray curable ink, image forming method and ink-jet recording apparatus | Masato Nishizeki | 2008-04-22 |