Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12408693 | Nicotine liquid formulation | Cecile Sinkinson | 2025-09-09 |
| 9042786 | Rotation driving force transmitting member, photoreceptor drum, process cartridge, and image forming apparatus | Hiroshi Sugimura, Akiko Kihara, Mami Adachi | 2015-05-26 |
| 8798505 | Rotation driving force transmitting member, photoreceptor drum, process cartridge, and image forming apparatus | Hiroshi Sugimura, Akiko Kihara, Mami Adachi | 2014-08-05 |
| 8546049 | Electrophotographic photoconductor and image forming apparatus using the same | Akiko Kihara, Takatsugu Obata | 2013-10-01 |
| 8354211 | Electrophotographic photoreceptor, image forming apparatus and process cartridge | Akiko Kihara, Kotaro Fukushima, Takatsugu Obata | 2013-01-15 |
| 8206881 | Electrophotographic photoreceptor and image forming apparatus | Takatsugu Obata | 2012-06-26 |
| 8076046 | Electrophotographic photoreceptor and image formation device provided with the same | Takahiro Kurauchi, Kotaro Fukushima | 2011-12-13 |
| 8003287 | Electrophotographic photoconductor and image-forming apparatus | Takatsugu Obata | 2011-08-23 |
| 7985519 | Aromatic polycarbonate, electrophotographic photoreceptor, and image forming apparatus | Akiko Kihara, Hiroshi Sugimura, Takatsugu Obata | 2011-07-26 |
| 7977020 | Electrophotographic photoreceptor containing enamine compound, image formation apparatus provided with the same, enamine compound and method for producing the same | Takatsugu Obata | 2011-07-12 |
| 7803507 | Electrophotographic photoreceptor and image forming apparatus including the same | Tatsuhiro Morita, Tomoko Kanazawa, Yohichi Takesawa, Takatsugu Obata, Shinya Mimura +1 more | 2010-09-28 |
| 7794907 | Hydrazone compound, electrophotographic photoreceptor comprising the hydrazone compound, and image forming apparatus equipped with the electrophotographic photoreceptor | Takatsugu Obata | 2010-09-14 |
| 7754403 | Electrophotoconductor and image forming apparatus | Hiroshi Sugimura, Takatsugu Obata | 2010-07-13 |
| 7727693 | Electrophotographic photoreceptor, electrophotographic image forming method, and electrophotographic apparatus | Kazuya Ishida, Takatsugu Obata | 2010-06-01 |
| 7672633 | Fixing roller with conductive inner layers, and fixing device and image forming apparatus being provided therewith | — | 2010-03-02 |
| 7625681 | Asymmetric bis-hydroxyenamine compound, electrophotographic photoreceptor and image forming apparatus | Hiroshi Sugimura, Takatsugu Obata | 2009-12-01 |
| 7615326 | Electrophotographic photoconductor and image forming apparatus | Takatsugu Obata | 2009-11-10 |
| 7563548 | Amine compound, manufacturing method thereof, electrophotographic photoreceptor using amine compound and image forming apparatus having the same | Takatsugu Obata | 2009-07-21 |
| 7560217 | Method of forming electrophotographic photoreceptor and method of drying coating film | Takatsugu Obata, Junichi Washo | 2009-07-14 |
| 7534539 | Electrophotographic photoreceptor and image forming apparatus having the same | Takatsugu Obata, Kazuya Ishida | 2009-05-19 |
| 7416824 | Organic photoconductive material electrophotographic photoreceptor and image forming apparatus using the same | Takatsugu Obata, Kazuya Ishida | 2008-08-26 |
| 7364823 | Amine compound, electrophotographic photoreceptor using the amine compound and image forming apparatus having the same | Takatsugu Obata | 2008-04-29 |
| 7175956 | Organic photoconductive material, electrophotographic photoreceptor comprising the same, and image-forming apparatus | Takatsugu Obata, Kazuya Ishida | 2007-02-13 |
| 6806561 | Electronic apparatus | — | 2004-10-19 |
| 6143453 | Electro-photographic photoreceptor and image-forming apparatus using same | Hiroshi Sugimura | 2000-11-07 |