Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D344721 | Image storage convertor | Eiji Sakaguchi | 1994-03-01 |
| D338031 | Copying machine | Eiji Sakaguchi, Ryoichi Takahashi, Yosuke Ohsawa | 1993-08-03 |
| D334768 | Copying machine | Ryoichi Takahashi, Mitsuru Sakurai | 1993-04-13 |
| D328756 | Copying machine | Yosuke Osawa, Mitsuru Sakurai | 1992-08-18 |
| D328757 | Paper supplying device for copying machine | — | 1992-08-18 |
| D319258 | Paper supplying device for copiers | — | 1991-08-20 |
| D319257 | Paper supplying device for copiers | — | 1991-08-20 |
| D318873 | Copying machine | — | 1991-08-06 |
| D318876 | Copying machine | — | 1991-08-06 |
| D314975 | Copying machine | — | 1991-02-26 |
| D303547 | Original feeder for a copying machine | — | 1989-09-19 |
| D299926 | Electrophotographic copier | Minoru Aoyama | 1989-02-21 |