Issued Patents All Time
Showing 51–71 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6358658 | Toner, and process for producing toner | Yayoi Tazawa, Takeshi Ikeda, Hitoshi Itabashi, Yuzo Tokunaga, Yasukazu Ayaki | 2002-03-19 |
| 6165663 | Magnetic coated carrier two-component type developer and developing method | Takeshi Ikeda, Yuko Sato, Hitoshi Itabashi, Yuzo Tokunaga | 2000-12-26 |
| 6159648 | Two-component type developer, developing method and image forming method | Yuzo Tokunaga | 2000-12-12 |
| 6124070 | Toner and process for producing toner | Tetsuro Fukui, Hiroshi Aoto, Hitoshi Itabashi, Yasukazu Ayaki | 2000-09-26 |
| 6106990 | Process for producing toner particles | Yayoi Tazawa, Hitoshi Itabashi, Yuzo Tokunaga, Yasukazu Ayaki | 2000-08-22 |
| 6083655 | Magnetic brush developing method | Hitoshi Itabashi, Yuko Sato, Yuzo Tokunaga | 2000-07-04 |
| 6010811 | Two-component type developer, developing method and image forming method | Yuzo Tokunaga | 2000-01-04 |
| 5985502 | Toner for developing an electrostatic image and process for producing a toner | Yasukazu Ayaki, Takeshi Ikeda, Tetsuro Fukui, Hitoshi Itabashi | 1999-11-16 |
| 5789132 | Toner for developing electrostatic images containing fine powder fluidity improver and, one-component developer, and two-component developer, containing this toner | Shinya Mayama, Takeshi Ikeda, Naoya Ogata | 1998-08-04 |
| 5766814 | Magnetic coated carrier, two-component type developer and developing method | Takeshi Ikeda, Yuko Sato, Hitoshi Itabashi, Yuzo Tokunaga | 1998-06-16 |
| 5744278 | Toner for developing an electrostatic image and process for producing a toner | Yasukazu Ayaki, Takeshi Ikeda, Tetsuro Fukui, Hitoshi Itabashi, Yayoi Nagao | 1998-04-28 |
| 5712069 | Two-component type developer, developing method and image forming method | Yuzo Tokunaga | 1998-01-27 |
| 5576133 | Carrier for use in electrophotography, two component-type developer and image forming method | Takeshi Ikeda, Yasuko Amano, Hitoshi Itabashi | 1996-11-19 |
| 5573880 | Carrier for electrophotography, process for its production, two-component type developer, and image forming method | Shinya Mayama, Takeshi Ikeda, Yuko Sato, Hiroshi Aoto, Yasuko Hayashi +2 more | 1996-11-12 |
| 5494770 | Image forming method using magnetic brush and specific carrier | Yasuko Amano, Hitoshi Itabashi | 1996-02-27 |
| 5470687 | Process for producing toner particles using free space formed in a polymeric medium | Shinya Mayama, Takeshi Ikeda, Naoya Ogata | 1995-11-28 |
| 5464720 | Electrophotographic method and apparatus using magnetic toner | Tatsuya Tada | 1995-11-07 |
| 5439771 | Carrier for use in electrophotography, two component-type developer and image forming method | Yasuko Amano, Hitoshi Itabashi | 1995-08-08 |
| 5340677 | Carrier for electrophotography, two-component type developer for electrostatic images, process for producing carrier for electrophotography, and image forming method | Takeshi Ikeda | 1994-08-23 |
| 5120631 | Color toner | Makoto Kanbayashi, Kenji Okado, Takayuki Nagatsuka | 1992-06-09 |
| 4471625 | Gas cycle refrigerator | Kou Yasukochi, Youichi Matsubara | 1984-09-18 |