Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7601475 | Carrier and developing agent for electrophotography | Takeshi Katoh, Yoshinori Urata, Kazuya Korematu, Takeshi Takayama, Mitsuhiro Hasegawa | 2009-10-13 |
| 7524600 | Electrophotographic toner | Tomoko Toizumi, Yoshiaki Akazawa, Satoshi Ogawa, Masao Suzuki, Akio Matsumoto +6 more | 2009-04-28 |
| 7011920 | Non-magnetic mono-component toner and developing method with the same | Takafumi Nagai, Tadayuki Sawai, Kouji Kida, Kazuya Korematsu, Toru Nishikawa +1 more | 2006-03-14 |
| 6864031 | Electrophotographic developer and image-forming method using the developer | Tatsuo Imafuku, Junichi Saito, Takahiro Bito | 2005-03-08 |
| 6783906 | Image forming apparatus | Masanori Matsumoto, Tadayuki Sawai, Kouji Kida, Yuko Takeda | 2004-08-31 |
| 6317576 | Electrophotographic developing unit | Hitoshi Nagahama, Katsuaki Sumida, Takahiro Bito, Keizo Kitamura | 2001-11-13 |
| 6110635 | Toner for electrophotography and a production method thereof | Yoshinori Urata, Tatsuo Imafuku, Takahiro Bito, Tadashi Nakamura, Yoshiaki Akazawa +2 more | 2000-08-29 |
| 6103439 | Toner used for electrophotography | Satoshi Ogawa, Hitoshi Nagahama, Yasuharu Morinishi, Tatsuo Imafuku, Takeaki Ohuchi +1 more | 2000-08-15 |
| 6066423 | Toner for electrophotography | Tatsuo Imafuku, Yoshinori Urata, Takahiro Bito, Nobuyasu Honda | 2000-05-23 |
| 6004713 | Toner, Developer, and process for producing the same | Yoshinori Urata, Hitoshi Nagahama, Yasuharu Morinishi, Satoshi Ogawa, Tadashi Nakamura +1 more | 1999-12-21 |
| 5981129 | Electrophotographic toner and method of manufacturing same | Yoshiaki Akazawa, Toshihiko Murakami, Tatuo Imafuku, Takeaki Ohuchi, Yasuharu Morinishi +3 more | 1999-11-09 |
| 5976751 | Electrophotographic printing-use toner | Yasuharu Morinishi, Tadashi Nakamura, Hitoshi Nagahama, Satoshi Ogawa, Takeaki Ohuchi | 1999-11-02 |
| 5923922 | Image forming apparatus with flying toner detecting device | Katuaki Sumida, Kanshiro Okamoto, Jitsuo Masuda, Masato Asanuma, Katsushi Inoue +3 more | 1999-07-13 |
| 5923920 | Image forming apparatus for controlling processing conditions in image forming process by detection of tiner patch density formed on photoreceptor surface | Masayasu Narimatsu, Hideji Saiko, Tomoko Nishino, Katsuaki Sumida, Jitsuo Masuda +1 more | 1999-07-13 |
| 5839018 | Toner density control for an image forming apparatus | Masato Asanuma, Toshiaki Ino, Kanshiro Okamoto, Hideji Saiko, Katsuaki Sumida +8 more | 1998-11-17 |
| 5826136 | Image stabilizing method for use in an image forming apparatus | Hideji Saiko, Motoyuki Itoyama, Jitsuo Masuda, Katsuhiro Nagayama, Hiroo Naoi +2 more | 1998-10-20 |
| 5734948 | Image stabilizer | Katsuhiro Nagayama, Jitsuo Masuda, Toshiaki Ino, Katsuaki Sumida, Hideji Saiko | 1998-03-31 |
| 5565294 | Electrostatic charge image-developing toner with polyethylene additive | Tadayuki Sawai, Tadashi Nakamura, Toshihiko Murakami, Yasuharu Morinishi, Katsuaki Sumida | 1996-10-15 |
| 5358819 | Developer for electrophotography | Yoshinori Urata, Norio Tateishi, Shigeaki Tasaka, Naotaka Funayama | 1994-10-25 |
| 5266433 | Developer for electrophotography | Tadashi Nakamura, Nobuhiko Nakano, Kanshiro Okamoto, Takeaki Oouti, Shintaro Hatano | 1993-11-30 |
| 5082761 | Set of electrophotographic toners | Shigeaki Tasaka, Nobuhiko Nakano, Kazuya Maeda, Yoshiaki Takahashi, Tadashi Nakamura +2 more | 1992-01-21 |