Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7901858 | Mixed cyclic phenol sulfides, and charge control agents and toners using the same | Masateru Yasumura, Masami Ito, Naohiro Tarumoto, Yoshikazu Aoki, Masaki Okubo +2 more | 2011-03-08 |