Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9882136 | Organic electroluminescent device | Makoto Nagaoka, Shuichi Hayashi, Yoshikazu Aoki | 2018-01-30 |
| 9835965 | Charge control agent and toner using same | Masaki Okubo, Ikuo Kimura, Masami Ito, Takeshi Yamamoto, Masaya Tojo +2 more | 2017-12-05 |
| 9703223 | Toner, developer, and toner cartridge | Masaki Okubo, Masami Ito, Masaya Tojo, Masafumi Asakai, Tetsuya Yoshida | 2017-07-11 |
| 8790855 | Charge control agent and toner using same | Ikuo Kimura, Masami Ito, Masaya Tojo, Kanae Hiraishi | 2014-07-29 |