Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12422768 | Image forming system | Shuichi Tamura, Naoyuki Yamamoto, Tohru Nakaegawa, Kota Mori, Yoshiro Tsukada | 2025-09-23 |
| 12393151 | Image forming system | Tohru Nakaegawa, Yoshiro Tsukada, Naoyuki Yamamoto, Kota Mori, Shuichi Tamura | 2025-08-19 |
| 12393152 | Image forming system | Kota Mori, Yoshiro Tsukada, Tohru Nakaegawa, Naoyuki Yamamoto, Shuichi Tamura | 2025-08-19 |
| 12326684 | Image forming system | Takahiro Suzuki, Ryota Fujioka, Yoshiro Tsukada | 2025-06-10 |
| 12222667 | Image forming system | Koji Arimura, Naoyuki Yamamoto, Shuichi Tamura, Ryota Fujioka, Yoshiro Tsukada +2 more | 2025-02-11 |
| 12099321 | Image forming system | Naoyuki Yamamoto, Yoshiro Tsukada, Tohru Nakaegawa, Kota Mori, Shuichi Tamura | 2024-09-24 |
| 12072659 | Image forming system | — | 2024-08-27 |
| 11977348 | Image forming system | — | 2024-05-07 |
| 11815850 | Image forming system | Koji Arimura, Naoyuki Yamamoto, Shuichi Tamura, Ryota Fujioka, Yoshiro Tsukada +2 more | 2023-11-14 |
| 11772408 | Image forming system | Yoshiro Tsukada, Shohei Okumura, Kota Mori, Tohru Nakaegawa | 2023-10-03 |
| 11762321 | Image forming system | — | 2023-09-19 |
| 10663879 | Image forming apparatus with plural corona chargers | — | 2020-05-26 |
| 10656581 | Image forming apparatus | Takahito Fuse, Masami Hano, Tadashi Fukuda, Shota Soda, Hidetaka Nakahara +1 more | 2020-05-19 |
| 10429787 | Image forming apparatus with detection of surface potential of photosensitive member and adjustment of slope of charge potential | — | 2019-10-01 |
| 10359728 | Image forming apparatus | — | 2019-07-23 |
| 10228648 | Image forming apparatus that determines lifetime of photosensitive member | — | 2019-03-12 |
| 9726999 | Image forming apparatus | — | 2017-08-08 |
| 8948636 | Image forming apparatus comprising a plurality of charging rollers | — | 2015-02-03 |
| 8265500 | Image forming apparatus | — | 2012-09-11 |
| 7684719 | Charging apparatus and image forming apparatus | — | 2010-03-23 |
| 7469116 | Image forming apparatus | — | 2008-12-23 |
| 7233750 | Image forming apparatus with control of transfer charge | — | 2007-06-19 |
| 7088933 | Image forming apparatus with control of transfer charge | — | 2006-08-08 |
| 6646670 | Image forming apparatus and manufacturing method thereof | Yuichiro Toyohara | 2003-11-11 |
| 6559876 | Image forming apparatus with exposure reduction mode | Yuichiro Toyohara | 2003-05-06 |