Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7917071 | Transfer belt unit and image forming apparatus using the same | Masashi Hirai, Yoshiaki Masuda, Susumu Murakami, Kuniaki Nakano, Kazuaki Ishikawa +1 more | 2011-03-29 |
| 7781137 | Method and apparatus for producing electrophotographic photoreceptor | Takatsugu Obata, Masanori Kinomoto | 2010-08-24 |
| 7693453 | Image forming apparatus equipped with an electrographic photoreceptor having a surface with low surface free energy | Koichi Toriyama, Kotaro Fukushima, Hisayuki Utsumi, Sayaka Fujita, Akiko Uchino +1 more | 2010-04-06 |
| 7457565 | Image forming apparatus | Ichiroh Fujii, Takatsugu Obata | 2008-11-25 |
| 7078143 | Electrophotographic photoreceptor and method for producing the same | Masaki Hashimoto, Kazushige Morita, Yuji Tanaka, Masayuki Sakamoto | 2006-07-18 |
| 7074531 | Electrophotographic photoreceptor | Kotaro Fukushima, Koichi Toriyama, Hisayuki Utsumi | 2006-07-11 |
| 6889020 | VIBRATION INSULATING MEMBER FITTING METHOD, VIBRATION INSULATING MEMBER FITTING DEVICE, VIBRATION INSULATING MEMBER, VIBRATION INSULATING MEMBER RECOVERING METHOD, AND VIBRATION INSULATING MEMBER RECOVERING DEVICE | Koichi Toriyama, Rikiya Matsuo, Hiroshi Sugimura, Masanori Matsumoto, Masayuki Sakamoto | 2005-05-03 |
| 6775497 | Electrophotographic photosensitive body with hollow base and filler element, electrophotographic apparatus using same | Hiroshi Sugimura, Koichi Toriyama, Rikiya Matsuo, Hisayuki Utsumi, Masanori Matsumoto +1 more | 2004-08-10 |
| 6696214 | Electrophotographic photoreceptor, process for production thereof, and image-forming apparatus using same | Satoshi Katayama, Masayuki Sakamoto, Tatsuhiro Morita, Sayaka Fujita, Tadashi Nakamura | 2004-02-24 |
| 6472114 | Coating fluid for electric charge generating layer, organic electrophotographic receptor, and method to manufacturing the same | Tatsuhiro Morita, Tomomi Nakamura, Rikiya Matsuo, Akihiko Kawahara, Koichi Toriyama | 2002-10-29 |
| 6265123 | Electrophotographic photosensitive element and manufacturing method thereof | Tatsuhiro Morita, Rikiya Matsuo, Sayaka Fujita, Kazushige Morita, Yoshihide Shimoda | 2001-07-24 |
| 6136484 | Electrophotographic photoreceptor, process for production thereof, and image-forming apparatus using same | Satoshi Katayama, Yoshihide Shimoda, Makoto Kurokawa, Hiroko Ishibashi, Tadashi Nakamura +5 more | 2000-10-24 |
| 6090514 | Electrophotographic photoreceptor | Hirofumi Kawaguchi, Akihiko Kawahara, Kazunari Hamasaki, Yoshio Inagaki, Ayako Yashima | 2000-07-18 |
| 5843606 | Phenanthrylenediamine derivative | Eiichi Miyamoto, Hideo Nakamori, Yukikatsu Imanaka, Yasuyuki Hanatani | 1998-12-01 |
| 5830615 | Naphthylenediamine derivative and electrophotosensitive material using the same | Eiichi Miyamoto, Hideo Nakamori, Yukikatsu Imanaka, Tadashi Sakuma, Maki Uchida +4 more | 1998-11-03 |
| 5767315 | Naphthylenediamine derivative | Eiichi Miyamoto, Hideo Nakamori, Yukikatsu Imanaka, Tadashi Sakuma, Maki Uchida | 1998-06-16 |
| 5550290 | Benzidine derivative and electrophotosensitive material using the same | Yasufumi Mizuta, Masashi Tanaka, Nariaki Muto, Toshiyuki Fukami, Hideo Nakamori +4 more | 1996-08-27 |
| 5514508 | Electrophotosensitive material | Toshiyuki Fukami, Hideo Nakamori, Hiroshi Shiomi, Hirofumi Kawaguchi, Hisakazu Uegaito +4 more | 1996-05-07 |
| 5312713 | Information recording medium and information recording method | Masaaki Yokoyama | 1994-05-17 |
| 5264266 | Information recording medium including an organic polysilane and an oxo metallic phthalocyaning | Masaaki Yokoyama | 1993-11-23 |
| 5184895 | Optical sensor and thermal sensor | Masaaki Yokoyama | 1993-02-09 |
| 5153088 | Electrophotosensitive material with x-type metal free phthalocyanine and perylene compound | Nariaki Muto, Tatsuo Maeda, Hirotsugu Nishikawa, Keisuke Sumida, Toru Nakazawa | 1992-10-06 |
| 5087544 | Perylene electrophotosensitive material with m-phenylenediamine | Nariaki Muto, Keisuke Sumida, Toru Nakazawa, Kazuo Matsumoto | 1992-02-11 |
| 5059503 | Electrophotosensitive material with combination of charge transfer materials | Nariaki Muto, Tatsuo Maeda, Toshihiko Nishiguchi, Keisuke Sumida, Toru Nakazawa | 1991-10-22 |