Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7973093 | Foamed rubber member | Naoki Hirakawa | 2011-07-05 |
| 7844195 | Cleaning member | — | 2010-11-30 |
| 6524695 | Conductive blade | Tetsuya Nakamura, Masato Ogasawara | 2003-02-25 |
| 6483034 | Blade | Masato Ogasawara | 2002-11-19 |
| 6376594 | Conductive member | Masato Ogasawara, Tetsuya Nakamura | 2002-04-23 |
| 6340515 | Conductive member | Tetsuya Nakamura, Masato Ogasawara | 2002-01-22 |