Issued Patents All Time
Showing 26–50 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6235441 | Positively chargeable toner, image forming method and image forming apparatus | Masami Fujimoto, Takakuni Kobori, Hiroyuki Fujikawa | 2001-05-22 |
| 6232027 | Toner having negative triboelectric chargeability and image forming method | Satoshi Matsunaga, Toshiaki Nakahara, Yuichi Mizoh, Minekazu Endo, Tadashi Doujo +1 more | 2001-05-15 |
| 6218065 | Toner having negative triboelectric chargeability and developing method | Takeshi Ohtake, Makoto Unno, Makoto Kanbayashi | 2001-04-17 |
| 6203959 | Toner | Masami Fujimoto, Takakuni Kobori, Hiroyuki Fujikawa | 2001-03-20 |
| 6187496 | Toner and developer for developing electrostatic image, process for production thereof and image forming method | Toshiaki Nakahara, Keita Nozawa, Kazuyoshi Hagiwara, Minoru Shimojo, Rika Shinba +2 more | 2001-02-13 |
| 6156470 | Toner having negative triboelectric chargeability and image forming method | Satoshi Matsunaga, Minekazu Endo | 2000-12-05 |
| 6156471 | Toner and image forming method | Takakuni Kobori, Masami Fujimoto, Hiroyuki Fujikawa | 2000-12-05 |
| 6120961 | Toner for developing electrostatic images | Masami Fujimoto, Tsutomu Onuma, Hiroyuki Fujikawa | 2000-09-19 |
| 6077638 | Toner and developer for developing electrostatic image, process for production thereof and image forming method | Toshiaki Nakahara, Keita Nozawa, Kazuyoshi Hagiwara, Minoru Shimojo, Rika Shinba +2 more | 2000-06-20 |
| 6020102 | Positive-chargeable toner, image forming method and apparatus unit | Masami Fujimoto, Tsutomu Onuma, Hiroyuki Fujikawa | 2000-02-01 |
| 5972554 | Toner for developing electrostatic images | Takayuki Nagatsuka, Makoto Unno | 1999-10-26 |
| 5968701 | Toner and image forming method | Tsutomu Onuma, Masami Fujimoto, Hiroyuki Fujikawa | 1999-10-19 |
| 5863695 | Toner for developing electrostatic image and image forming method | Shinji Doi, Masaki Uchiyama | 1999-01-26 |
| 5824442 | Developing method, image forming method, and heat fixing method, with toner | Hiroaki Kawakami, Masatsugu Fujiwara, Kazunori Kato | 1998-10-20 |
| 5707770 | Toner for developing electrostatic images, two component type developer, developing method, image forming method, heat fixing method, and process for producing toner | Hiroaki Kawakami, Masatsugu Fujiwara, Kazunori Kato | 1998-01-13 |
| 5652075 | Color toner, two-component type developer, image forming apparatus, color image forming method and process for producing a color toner | Makoto Kanbayashi | 1997-07-29 |
| 5629122 | Toner for developing electrostatic image and image forming method | Shinji Doi, Masaki Uchiyama | 1997-05-13 |
| 5614344 | Toner for developing electrostatic images and image forming method | Hiroaki Kawakami, Shinji Doi, Masatsugu Fujiwara, Kazunori Kato | 1997-03-25 |
| 5504272 | Magnetic toner having defined particle distribution | Masaki Uchiyama, Yasutaka Akashi, Masaaki Taya, Makoto Unno | 1996-04-02 |
| 5500046 | Toner for developing electrostatic images, image forming apparatus, apparatus unit and facsimile apparatus | Kazuyoshi Hagiwara | 1996-03-19 |
| 5500318 | Toner for developing electrostatic image and fixing method | Masaki Uchiyama, Yoshinobu Joh, Yasutaka Akashi, Masaaki Taya, Makoto Unno | 1996-03-19 |
| 5389484 | Toner for developing electrostatic images, image forming apparatus, apparatus unit and facsimile apparatus | Kazuyoshi Hagiwara | 1995-02-14 |
| 5384224 | Toner for developing electrostatic image | Hiroaki Kawakami, Masatsugu Fujiwara, masashi Jinbo, Tsutomu Onuma | 1995-01-24 |
| 5364722 | Toner for developing electrostatic image and heat-fixing method comprising a hydrocarbon wax | Hiroaki Kawakami, Masatsugu Fujiwara, masashi Jinbo, Tsutomu Onuma | 1994-11-15 |
| 5338894 | Image forming method with improved development | Masaki Uchiyama, Yasutaka Akashi, Masaaki Taya, Makoto Unno | 1994-08-16 |