Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12393135 | Image forming apparatus | Norihiro Shirahata, Shuhei Tokiwa | 2025-08-19 |
| 12313982 | Image forming apparatus having longer term anti-fogging | Shuhei Tokiwa, Norihiro Shirahata | 2025-05-27 |
| 12253811 | Developing device | Satoshi Sunahara, Go Shindo, Shuhei Tokiwa | 2025-03-18 |
| 12204269 | Image forming apparatus including movable brush member | Shuhei Tokiwa, Kuniaki Tamagaki, TSUBASA YOSHIDA | 2025-01-21 |
| 12124205 | Foreign substance collection apparatus, process cartridge, and image forming apparatus | Noriyuki Komatsu, Tomonori Mori, Teruhiko Sasaki, Makoto Hayashida, Shunsuke Uratani +1 more | 2024-10-22 |
| 11841668 | Foreign substance collection apparatus, process cartridge, and image forming apparatus | Noriyuki Komatsu, Tomonori Mori, Teruhiko Sasaki, Makoto Hayashida, Shunsuke Uratani +1 more | 2023-12-12 |
| 11829087 | Image forming apparatus with image bearing members having different surface layer thicknesses | Hiroki Tanaka, Nobuo Oshima, Akihisa Matsukawa, Katsuichi Abe, Takayuki Namiki | 2023-11-28 |
| 11526103 | Image forming apparatus capable of suppressing image defect due to foreign matter | Hiroki Tanaka, Nobuo Oshima, Akihisa Matsukawa, Katsuichi Abe, Takayuki Namiki | 2022-12-13 |
| 11493857 | Image forming apparatus | Satoshi Sunahara, Nobuo Oshima | 2022-11-08 |
| 11314186 | Image forming apparatus having developer conveyance speed control | Nobuo Oshima | 2022-04-26 |
| 11314193 | Foreign substance collection apparatus, process cartridge, and image forming apparatus | Noriyuki Komatsu, Tomonori Mori, Teruhiko Sasaki, Makoto Hayashida, Shunsuke Uratani +1 more | 2022-04-26 |
| 10877396 | Image forming apparatus | Satoshi Sunahara, Nobuo Oshima | 2020-12-29 |
| 10401779 | Image forming apparatus | Shinji Katagiri, Tsuguhiro Yoshida, Shuichi Tetsuno, Takayuki Tanaka, Takahiro Ikeda +1 more | 2019-09-03 |
| 10338495 | Image forming apparatus | — | 2019-07-02 |
| 10216143 | Image forming apparatus having a lubricant and developer of opposite polarity | Yuji Kawaguchi | 2019-02-26 |
| 10108105 | Developing apparatus and image forming apparatus | Yosuke Watanabe, Masanori Tanaka | 2018-10-23 |
| 9874848 | Image forming apparatus having a lubricant and developer of opposite polarity | Yuji Kawaguchi | 2018-01-23 |
| 9337719 | Power converter control device | Akira Nakamori | 2016-05-10 |
| D724554 | Semiconductor module | Hideaki Takahashi, Tatsuya Karasawa, Kenshi Terashima | 2015-03-17 |
| 8779929 | Semiconductor element drive device having a plurality of protection circuits and outputting a protection operation notification signal that identifies which of the protection circuits detected a problem | Sachiaki Komatsu | 2014-07-15 |
| D705184 | Semiconductor module | Hideaki Takahashi, Kenshi Terashima, Masahiro Taoka | 2014-05-20 |
| 8564913 | Driving device for semiconductor element | Akira Nakamori | 2013-10-22 |
| 7194215 | Process cartridge comprising memory medium storing information for selecting one of a plurality of alternating voltages applied to charging member and such a memory medium | Keiji Okano, Satoshi Sunahara | 2007-03-20 |
| 7174112 | Image forming apparatus featuring a transfer bias having a polarity opposite to a polarity of a charged toner | Satoshi Sunahara | 2007-02-06 |
| 7162173 | Image forming apparatus using an ordered set of first, second and charging AC peak to peak voltages | Satoshi Sunahara | 2007-01-09 |