Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12346037 | Image forming apparatus | Hiroki Tanaka, Naoya Sawamura | 2025-07-01 |
| 12147170 | Image forming apparatus having toner charging | Yuta Isobe, Kuniaki Tamagaki, Takashi Koyanagi, Ryosuke Kanai, Hiroki Tanaka +3 more | 2024-11-19 |
| 11970390 | Method for producing microchannel device | Takeshi Yamamoto, Jun Miura, Keiji Miyazaki, Hiroki Tanaka, MAKOTO FUKATSU +4 more | 2024-04-30 |
| 11829087 | Image forming apparatus with image bearing members having different surface layer thicknesses | Hiroki Tanaka, Satoru Motohashi, Nobuo Oshima, Katsuichi Abe, Takayuki Namiki | 2023-11-28 |
| 11526103 | Image forming apparatus capable of suppressing image defect due to foreign matter | Hiroki Tanaka, Satoru Motohashi, Nobuo Oshima, Katsuichi Abe, Takayuki Namiki | 2022-12-13 |
| 10620568 | Developing device having magnetic field generating members, image forming apparatus and cartridge | Hiroki Tanaka, Motonari Ito, Hideo Kihara | 2020-04-14 |
| 10209668 | Image forming apparatus, process cartridge, developing cartridge, and drum cartridge | Toshiki Okamura, Kuniaki Tamagaki, Takanori Watanabe, Hiroyoshi Iwayama, Makoto Tokudome +2 more | 2019-02-19 |
| 9977368 | Developing apparatus, process cartridge, and image forming apparatus | Hiroki Tanaka, Motonari Ito, Satoshi Sunahara, Toshiki Okamura | 2018-05-22 |
| 9971298 | Image forming apparatus, process cartridge, developing cartridge, and drum cartridge | Toshiki Okamura, Kuniaki Tamagaki, Takanori Watanabe, Hiroyoshi Iwayama, Makoto Tokudome +2 more | 2018-05-15 |
| 9910405 | Developing device, process cartridge, and image forming apparatus | Takanori Watanabe, Kuniaki Tamagaki | 2018-03-06 |
| 9904202 | Image forming apparatus having potential difference control | Kuniaki Tamagaki, Takanori Watanabe | 2018-02-27 |
| 9835973 | Image forming apparatus having cleaner-less developer system | Gosuke Goto, Satoshi Sunahara | 2017-12-05 |
| 9727002 | Image forming apparatus having an image bearing member charged with predetermined polarity and potential | Hiroyoshi Iwayama, Takashi Hiramatsu, Satoshi Sunahara | 2017-08-08 |
| 9465322 | Cartridge and image forming apparatus | Yusuke Usui, Hiroyoshi Iwayama, Takanori Watanabe, Naoki Okamoto, Kazuhiro Yamauchi | 2016-10-11 |
| 9442454 | Image forming apparatus having an image bearing member charged with predetermined polarity and potential | Hiroyoshi Iwayama, Takashi Hiramatsu, Satoshi Sunahara | 2016-09-13 |
| 9429868 | Image forming apparatus | Yusuke Usui, Kuniaki Tamagaki, Takashi Hiramatsu | 2016-08-30 |
| 9239546 | Developing unit and process cartridge | Takashi Hiramatsu, Takayuki Namiki | 2016-01-19 |
| 8565624 | Image forming apparatus and process cartridge | Nobuyoshi Yoshida | 2013-10-22 |