Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7574164 | Developing device and electrophotographic apparatus using the same | Hisao Okada, Hiroyuki Mabuchi, Teruaki Mitsuya, Akio Tsujita | 2009-08-11 |
| 7144667 | Electrostatic charge image developing toner, and developer, image forming apparatus and image forming method using the same toner | Junji Kobayashi, Ryuuichi Shimizu, Shigenori Yaguchi, Hirobumi Ouchi | 2006-12-05 |
| 7090956 | Image forming method and image forming apparatus | Katsuhiko Suzuki, Masami Ishikawa, Teruaki Mitsuya, Hisao Okada, Masayoshi Ishii | 2006-08-15 |
| 7022448 | Electrophotographic toner and image-forming system | Shigenori Yaguchi, Ryuuichi Shimizu, Junji Kobayashi, Tadahiro Kaneko, Nobuyoshi Hoshi | 2006-04-04 |
| 6829449 | Image forming apparatus with transfer bias inverting function | Hiroyoshi Matsumoto, Teruaki Mitsuya, Hisao Okada, Natsuki Kuribayashi, Masayoshi Ishii +1 more | 2004-12-07 |
| 6813462 | Electro-photographic developing unit | Teruaki Mitsuya, Masayoshi Ishii, Hisao Okada, Hiroyoshi Matsumoto, Keisuke Kubota +1 more | 2004-11-02 |
| 6783909 | Electrostatic image developing toner and image forming method | Ryuuichi Shimizu, Shigenori Yaguchi, Junji Kobayashi, Tadahiro Kaneko, Nobuyoshi Hoshi | 2004-08-31 |
| 6696210 | Electrostatic charge developing toner and image forming method using the same | Shigenori Yaguchi, Ryuuichi Shimizu, Junji Kobayashi, Nobuyoshi Hoshi | 2004-02-24 |
| 6157798 | Electrostatic recording apparatus | Tomonari Hokkyo, Katsuya Kawai, Koji Kato, Masayasu Anzai | 2000-12-05 |
| 5923933 | Electrophotographic apparatus | Masayasu Anzai, Yoshitaka Fujinuma, Hiroyoshi Matsumoto, Yasuo Takuma, Hisao Okada +7 more | 1999-07-13 |
| 5832347 | Toner for recording electrostatic image and electrostatic recording method and apparatus using the same | Katsuya Kawai, Masayasu Anzai | 1998-11-03 |
| 5701560 | Image forming apparatus having a photosensitive body formed of a base material consisting of As.sub.2 Se.sub.3 or a-Si and a method | Akio Tsujita, Masayasu Anzai | 1997-12-23 |
| 5649273 | Belt-type fixing device having an irregular surface contour | Ryuuichi Shimizu, Toshiya Satoh, Teruaki Mitsuya, Takashi Suzuki | 1997-07-15 |
| 5519479 | Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device | Ryuuichi Shimizu, Toshiya Satoh, Teruaki Mitsuya, Takashi Suzuki | 1996-05-21 |
| 5508138 | Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device | Ryuuichi Shimizu, Toshiya Satoh, Teruaki Mitsuya, Takashi Suzuki | 1996-04-16 |
| 5363180 | Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device | Ryuuichi Shimizu, Toshiya Satoh, Teruaki Mitsuya, Takashi Suzuki | 1994-11-08 |
| 5345301 | Image fixing device and electrophotographic apparatus incorporated with such device | Toshiya Satoh, Ryuuichi Shimizu, Akira Shimada, Katsumi Kumada | 1994-09-06 |
| 5215842 | Photosensitive element for electrophotography | Sukekazu Aratani, Shigeo Suzuki, Akira Hosoya, Katuo Sugawara, Toshiro Saito +3 more | 1993-06-01 |
| 4990418 | Electrophotographic photoreceptor and method of producing the same | Akio Mukoh, Mitsuoshi Shoji, Shigeo Suzuki, Takayuki Nakakawaji, Yutaka Ito +4 more | 1991-02-05 |
| 4978596 | Electrophotographic toner comprising lactone-modified epoxy resin | Ryuichi Shimizu, Shigeo Suzuki, Shigeo Hosaka, Yasuki Mori, Toshikazu Narahara | 1990-12-18 |
| 4680058 | White ink composition for ink-jet printing | Ryuichi Shimizu, Yasuki Mori, Osamu Isoo, Hirosada Morishita, Tooru Hosoda | 1987-07-14 |
| 4640880 | Electrophotographic process with magnetic brush development using semiconductive ferrite carriers | Yasuki Mori, Koji Noguchi, Tsutomu Iimura | 1987-02-03 |
| 4433042 | Electrophotographic developing method using magnetic toners | Akio Mukoh, Hirosada Morishita, Nobuyoshi Hoshi | 1984-02-21 |
| 4265993 | Magnetic toner for electrostatic images and transfer copying | Akio Mukoh, Hirosada Morishita | 1981-05-05 |