Issued Patents All Time
Showing 25 most recent of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11976230 | Photoresponsive material, adhesive, optical switching material, toner, and image forming method | Yukiko NAKAI, Kouji Sugama, Haruo Horiguchi, Toyoko Shibata | 2024-05-07 |
| 11702398 | Photoresponsive low-molecular weight material, adhesive, toner, and image forming method | Yukiko Kusano, Haruo Horiguchi, Kouji Sugama, Seijiro Takahashi, Toyoko Shibata +1 more | 2023-07-18 |
| 9964870 | Electrophotographic photoreceptor and image forming apparatus and image forming method using the same | Masanori YUMITA | 2018-05-08 |
| 9958796 | Electrophotographic photoreceptor, image forming method, and image forming apparatus | Masanori YUMITA | 2018-05-01 |
| 9436108 | Electrophotographic photoreceptor | Daisuke Kodama, Toshiyuki Fujita | 2016-09-06 |
| 8771910 | Electrophotographic photoreceptor | Toshiyuki Fujita | 2014-07-08 |
| 8557486 | Organic photoreceptor, manufacturing method of organic photoreceptor, and image forming apparatus | Takeshi Ishida, Masahiko Kurachi, Toshiyuki Fujita, Seisuke Maeda, Seijiro Takahashi | 2013-10-15 |
| 8481233 | Organic photoreceptor, image forming apparatus and process cartridge | Toshiyuki Fujita, Masahiko Kurachi, Kunihiro Ogura | 2013-07-09 |
| 8404417 | Organic photoreceptor, image forming apparatus and process cartridge | Toshiyuki Fujita, Takeshi Ishida, Masahiko Kurachi, Seisuke Maeda, Seijiro Takahashi | 2013-03-26 |
| 8354212 | Electrophotographic photoreceptor, image forming apparatus, and method for image formation | Takeshi Ishida, Masahiko Kurachi, Toshiyuki Fujita, Seisuke Maeda, Seijiro Takahashi | 2013-01-15 |
| 8318396 | Organic photoreceptor and preparation method thereof | Toshiyuki Fujita, Takeshi Ishida, Masahiko Kurachi, Seisuke Maeda, Seijiro Takahashi | 2012-11-27 |
| 8202675 | Electrophotographic photoreceptor, image forming apparatus, and process cartridge | Masahiko Kurachi, Takeshi Ishida, Toshiyuki Fujita, Seisuke Maeda, Seijiro Takahashi | 2012-06-19 |
| 8163456 | Image forming method and image forming apparatus | Masahiko Kurachi, Toshiyuki Fujita | 2012-04-24 |
| 8084172 | Organic photoreceptor, image forming apparatus, process cartridge, and color image forming apparatus | Masahiko Kurachi, Toshiyuki Fujita | 2011-12-27 |
| 8071266 | Electrophotographic photoreceptor, and process cartridge and image forming apparatus employing the same | Kunihiro Ogura, Masahiko Kurachi, Toshiyuki Fujita | 2011-12-06 |
| 7977021 | Electrophotographic toner, and image forming method and image forming apparatus employing the same | Toshiyuki Fujita, Masahiko Kurachi, Kunihiro Ogura | 2011-07-12 |
| 7473510 | Electrophotographic photoreceptor, a processing cartridge, an image forming apparatus and an image forming method | Kageyuki Tomoyori, Tomoo Sakimura, Tsuyoshi Shimoda | 2009-01-06 |
| 7402366 | Organic photoreceptor, process cartridge, image forming method, and image forming apparatus | Masao Asano, Kazuhisa Shida, Kunihiro Ogura | 2008-07-22 |
| 7358020 | Image forming apparatus and image forming method | Kazuhisa Shida, Kageyuki Tomoyori, Masao Asano, Tomoe Kitani | 2008-04-15 |
| 6878496 | Electrophotoreceptor, image forming method, image forming apparatus and processing cartridge | Masao Asano, Tomoo Sakimura, Shinichi Hamaguchi | 2005-04-12 |
| 6620567 | Electrophotographic photoreceptor, image forming apparatus and processing cartridge | Tomoo Sakimura, Shinichi Hamaguchi, Chigusa Miyake | 2003-09-16 |
| 6544703 | Electrophotographic photoreceptor, electrophotographic process, and electrophotographic image forming method | — | 2003-04-08 |
| 6514651 | Metal phthalocyanine crystal particles, production method thereof, and electrophotographic photoreceptor as well as electrophotographic process using the same | — | 2003-02-04 |
| 6399263 | Electrophotographic photoreceptor, electrophotographic process, and electrophotographic image forming method | — | 2002-06-04 |
| 6268097 | Electrophotographic photoreceptor | Kazumasa Watanabe, Kenichi Yasuda | 2001-07-31 |