Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7300733 | Black toner with defined loss tangent | Nobuyoshi Sugahara, Yasuhiro Ichikawa, Tetsuya Ida, Kazuhiko Hayami, Nozomu Komatsu | 2007-11-27 |
| 7022449 | Black toner with defined loss tangent | Nobuyoshi Sugahara, Yasuhiro Ichikawa, Tetsuya Ida, Kazuhiko Hayami, Nozomu Komatsu | 2006-04-04 |
| 6783910 | Toner for developing electrostatic image | Makoto Unno, Yushi Mikuriya, Tadashi Doujo | 2004-08-31 |
| 6623901 | Toner for developing electrostatic image | Makoto Unno, Yushi Mikuriya, Tadashi Doujo | 2003-09-23 |
| 6586147 | Toner and full-color image forming method | Wakashi Iida, Nobuyoshi Sugawara, Takayuki Itakura, Yojiro Hotta | 2003-07-01 |
| 6528222 | Toner | Wakashi Iida, Nobuyoshi Sugahara, Takayuki Itakura, Yojiro Hotta | 2003-03-04 |
| 6365314 | Toner for developing electrostatic image, image forming method and process cartridge | Koichi Tomiyama, Manabu Ohno, Makoto Unno, Yushi Mikuriya, Nobuyuki Okubo +2 more | 2002-04-02 |
| 6187490 | Resin-coated carrier, two-component developer and image forming method | Masaaki Taya, Yasuhiro Ichikawa | 2001-02-13 |
| 6090515 | Toner for developing electrostatic image, image forming method and process cartridge | Koichi Tomiyama, Manabu Ohno, Makoto Unno, Yushi Mikuriya, Nobuyuki Okubo +2 more | 2000-07-18 |
| 5858597 | Toner for developing electrostatic image containing specified double oxide particles | Yuichi Mizoh, Yushi Mikuriya, Tadashi Doujo | 1999-01-12 |
| 5660963 | Toner for developing electrostatic image | Tadashi Doujo, Makoto Unno, Yushi Mikuriya | 1997-08-26 |
| 5578408 | Toner for developing electrostatic image | Masaaki Taya, Makoto Unno, Tadashi Doujo | 1996-11-26 |
| 5547796 | Developer containing insulating magnetic toner flowability-improving agent and inorganic fine powder | Masaaki Taya, Masami Fujimoto | 1996-08-20 |
| 5483327 | Toner for developing electrostatic image, forming apparatus and process cartridge | Masaaki Taya, Makoto Unno, Tadashi Doujo | 1996-01-09 |
| 5439770 | Toner for developing electrostatic image, image forming apparatus and process cartridge | Masaaki Taya, Makoto Unno, Tadashi Doujo | 1995-08-08 |
| 5391450 | Toner image heat-fixing method | Takayuki Nagatsuka, Tatsuya Nakamura, Hiromi Mori | 1995-02-21 |
| 5346792 | Color toner | Hiroyuki Kobayashi | 1994-09-13 |
| 5250382 | Toner for developing electrostatic image, and image fixing method | Minoru Shimojo, Tsuyoshi Takiguchi | 1993-10-05 |
| 5102761 | Color toner for electrophotography containing a phenolic compound | Ichiro Ohsaki, Yuko Sato, Hiroyuki Kobayashi, Toshiyuki Ugai | 1992-04-07 |
| 4904562 | Process for producing encapsulated toner | Hiroshi Yusa, Masuo Yamazaki, Yasutaka Akashi | 1990-02-27 |
| 4510293 | Process for hydrogenating conjugated diene polymers | Yoichiro Kubo, Kiyomori Oura | 1985-04-09 |