Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5175593 | Fingerprint photographing system | Ryohei Kumagai | 1992-12-29 |
| 5073960 | Image processing method using improved Bresenham algorithm in creating an outline of a figure to be painted and apparatus adopting the method | Yoshiyuki Nakai, Tatsushi Nakajima, Seido Kawanaka | 1991-12-17 |
| 4811661 | Dampening method and apparatus using an air nozzle and mist generator | — | 1989-03-14 |
| 4325191 | Coffee roaster | Ryohei Kumagai | 1982-04-20 |