Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6377766 | Electrophotographic apparatus having a printing density controller for dropout and non-dropout color | Hiroshi Ueno, Koutarou Yamada, Kouhei Katayama, Hisashi Nakajima | 2002-04-23 |
| 5579091 | Developing unit for electro-photographic apparatus | Koutarou Yamada, Youji Hirose, Hiroshi Ueno, Isao Watanabe, Yoshio Ogura +2 more | 1996-11-26 |