Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5790929 | Developing apparatus having mixing region | Koji Noguchi | 1998-08-04 |
| 5571987 | Developing apparatus using magnetic developing poles having the same polarity | Koji Noguchi | 1996-11-05 |
| 5484680 | Magnetic brush developing method | Koji Noguchi | 1996-01-16 |
| 5429900 | Magnetic developer | Masumi Asanae, Akihiko Funakawa | 1995-07-04 |
| 4660505 | Developing apparatus | Hiromi Kashiwagi, Keitaro Yamashita | 1987-04-28 |
| 4435494 | Process for depositing magnetic toner material on electrostatic latent images | Keitaro Yamashita, Koji Noguchi | 1984-03-06 |
| 4309498 | Electrophotography using a magnetic brush | Keitaro Yamashita, Masumi Asanae | 1982-01-05 |
| 4267248 | Magnet-brush development process of electric pattern images | Keitaro Yamashita | 1981-05-12 |
| 4263390 | Residual toner removing device | Keitaro Yamashita | 1981-04-21 |