Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6233462 | Portable terminal device for automatically controlling transmitting voice level and calling sound level | — | 2001-05-15 |
| 6032012 | Developing device, image forming unit and color image forming apparatus, both having the developing device | Takeo Hirono, Noriki Ono, Tatsumi Shimanari, Takao Yorifuji, Moriyuki Kouroku +2 more | 2000-02-29 |
| 4634259 | Apparatus for maintaining distinct edges between two colors in a two-color image forming device | Mitsugu Oishi | 1987-01-06 |