Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7943281 | Black toner | Takaaki Kaya, Yasukazu Ayaki, Shigeto Tamura, Ryoichi Fujita, Yuichi Yajima | 2011-05-17 |
| 7049039 | Coloring agent for toner, and toner | Yasukazu Ayaki | 2006-05-23 |
| 6808855 | Process for producing toner | Yasukazu Ayaki, Hitoshi Itabashi | 2004-10-26 |
| 6566028 | Toner, and process for producing toner | Takeshi Ikeda, Yoshinobu Baba, Hitoshi Itabashi, Yuzo Tokunaga, Yasukazu Ayaki | 2003-05-20 |
| 6358658 | Toner, and process for producing toner | Takeshi Ikeda, Yoshinobu Baba, Hitoshi Itabashi, Yuzo Tokunaga, Yasukazu Ayaki | 2002-03-19 |
| 6106990 | Process for producing toner particles | Yoshinobu Baba, Hitoshi Itabashi, Yuzo Tokunaga, Yasukazu Ayaki | 2000-08-22 |