Issued Patents All Time
Showing 1–25 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12429787 | Electronic device and method for producing the same, image forming method, and image forming apparatus | Tomoharu Asano, Ryota Inoue | 2025-09-30 |
| 12429786 | Electronic device and method for producing the same, image forming method, and image forming apparatus | Tomoharu Asano, Masayuki Ishii, Ryota Inoue | 2025-09-30 |
| 12414429 | Metal oxide particles having p-type semiconductivity, electronic device using the same, method for manufacturing electronic device, and image forming apparatus | Tomoharu Asano, Ryota Inoue | 2025-09-09 |
| 11575095 | Photoelectric conversion device, process cartridge, and image forming apparatus | Daisuke Kubo, Suzuka Nozoe, Tomoharu Asano, Tetsuya Toshine, Nozomu Tamoto +2 more | 2023-02-07 |
| 10845738 | Image forming method, image forming apparatus, and process cartridge | Akihiro Sugino, Keisuke Shimoyama, Ryohta Takahashi | 2020-11-24 |
| 10585366 | Image forming apparatus | Hiroki ORII, Ryohta Takahashi | 2020-03-10 |
| 10545417 | Electrophotographic photoconductor, image forming apparatus, and image forming method | Tomoharu Asano | 2020-01-28 |
| 10416594 | Image forming method, image forming apparatus, and process cartridge | Akihiro Sugino, Keisuke Shimoyama, Ryohta Takahashi | 2019-09-17 |
| 10114302 | Photoconductor, image forming apparatus, and process cartridge | Ryohta Takahashi, Akihiro Sugino, Eiji Kurimoto, Keisuke Shimoyama, Tetsuro Suzuki +2 more | 2018-10-30 |
| 9989868 | Photoconductor, image forming method using the same, method of manufacturing the photoconductor, and image forming apparatus | Nobutaka Eguchi, Akihiro Sugino, Keisuke Shimoyama | 2018-06-05 |
| 9740116 | Photoconductor, and image forming method and image forming apparatus using the photoconductor | Nobutaka Eguchi, Akihiro Sugino, Keisuke Shimoyama, Kazuhiro Egawa | 2017-08-22 |
| 9523930 | Photoconductor, and image forming method and image forming apparatus using the same | Nobutaka Eguchi, Akihiro Sugino, Keisuke Shimoyama, Kazuhiro Egawa | 2016-12-20 |
| 9046863 | Image forming apparatus, and image forming method | Kazuyuki Nakatsuru | 2015-06-02 |
| 8795935 | Electrophotographic photoconductor, production method of the same, image forming apparatus, and process cartridge | Junichi Yamazaki, Yukio Fujiwara, Kazuhiro Egawa | 2014-08-05 |
| 8669030 | Electrophotographic photoreceptor, and image forming method and apparatus using the same | Yukio Fujiwara, Tetsuro Suzuki, Kazukiyo Nagai, Hiroshi Tamura, Hiroshi Ikuno | 2014-03-11 |
| 8597863 | Electrophotographic photoreceptor, method of manufacturing electrophotographic photoreceptor, process cartridge, and image forming apparatus | Yukio Fujiwara, Kazuhiro Egawa | 2013-12-03 |
| 8557487 | Electrophotographic photoconductor, method for producing electrophotographic photoconductor, and image forming apparatus | Kazuhiro Egawa | 2013-10-15 |
| 8543037 | Image forming apparatus | Kazuhiro Egawa, Yukio Fujiwara, Kohichi Ohshima | 2013-09-24 |
| 8512924 | Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the photoreceptor | Kazuhiro Egawa, Yukio Fujiwara | 2013-08-20 |
| 8420284 | Electrophotographic photoreceptor, image forming apparatus and process cartridge therefor using the electrophotographic photoreceptor | Kohichi Ohshima, Yukio Fujiwara, Kazuhiro Egawa | 2013-04-16 |
| 8293439 | Electrophotographic photorecptor, method of manufacturing electrophotographic photorecptor, image forming apparatus, and process cartridge | Yukio Fujiwara, Kazuhiro Egawa, Shinji Nohsho, Mayumi Yoshihara, Mihoko Matsumoto +1 more | 2012-10-23 |
| 8247143 | Photoreceptor, image formation method, image forming apparatus and process cartridge | Kazuhiro Egawa, Yukio Fujiwara | 2012-08-21 |
| 8170449 | Image forming apparatus and process cartridge | Yukio Fujiwara, Kazuhiro Egawa | 2012-05-01 |
| 8148038 | Image bearing member, process cartridge, image forming apparatus and method of forming image bearing member | Yukio Fujiwara, Tetsuro Suzuki, Hiroshi Tamura, Hiroshi Ikuno, Takafumi Iwamoto | 2012-04-03 |
| 8119317 | Electrophotographic photoreceptor, and process cartridge and image forming apparatus using the photoreceptor | Tetsuro Suzuki, Hiroshi Tamura, Hiroshi Ikuno, Yukio Fujiwara, Takafumi Iwamoto | 2012-02-21 |