Issued Patents All Time
Showing 51–71 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5330871 | Toner for developing electrostatic image | Masaki Uchiyama, Yoshinobu Joh, Yasutaka Akashi, Masaaki Taya, Makoto Unno | 1994-07-19 |
| 5310615 | Image forming method | — | 1994-05-10 |
| 5298950 | Image forming apparatus | — | 1994-03-29 |
| 5296326 | Magnetic toner | Masaaki Taya, Yasutaka Akashi, Makoto Unno, Masaki Uchiyama, Kiichiro Sakashita | 1994-03-22 |
| 5268248 | Toner for developing electrostatic image and process for production thereof | Masaki Uchiyama, Yoshinobu Joh, Yasutaka Akashi, Masaaki Taya, Makoto Unno +1 more | 1993-12-07 |
| 5219695 | Image forming method | — | 1993-06-15 |
| 5219946 | Binder resin and process for producing it | Masaki Uchiyama, Tsutomu Kukimoto, Yasutaka Akashi, Masaaki Taya, Makoto Unno +1 more | 1993-06-15 |
| 5212524 | Toner for developing electrostatic images, image forming method and image forming apparatus | Yasutaka Akashi, Masaki Uchiyama, Makoto Unno, Masaaki Taya | 1993-05-18 |
| 5202213 | Developer with surface treated silicic acid for developing electrostatic image | Toshiaki Nakahara, Satoshi Yoshida, Masatsugu Fujiwara, Kiichiro Sakashita | 1993-04-13 |
| 5202731 | Image forming apparatus having an alternating bias electric field | Yasutaka Akashi, Masaaki Taya, Kuniko Kobayashi, Masaki Uchiyama | 1993-04-13 |
| 5175070 | Image forming method and image forming apparatus | Yasutaka Akashi, Masaaki Taya, Kuniko Kobayashi, Masaki Uchiyama | 1992-12-29 |
| 5169738 | Toner for developing electrostatic images, image forming method and image forming apparatus | Yasutaka Akashi, Masaki Uchiyama, Makoto Unno, Masaaki Taya | 1992-12-08 |
| 5014089 | Developer in an image forming device having a binding resin and magnetic powder | Kiichiro Sakashita, Toshiaki Nakahara, Naoki Matsushige, Satoshi Yoshida, Masatsugu Fujiwara +1 more | 1991-05-07 |
| 5009973 | Image forming method and image forming apparatus | Satoshi Yoshida, Toshiaki Nakahara, Kiichiro Sakashita | 1991-04-23 |
| 4999272 | Electrophotographic analog and digital imaging and developing using magnetic toner | Toshiaki Nakahara, Satoshi Yoshida, Masatsugu Fujiwara, Kiichiro Sakashita | 1991-03-12 |
| 4985327 | Non-magnetic toner | Kiichiro Sakashita, Satoshi Yoshida, Toshiaki Nakahara, Naoki Matsushige, Masatsugu Fujiwara +1 more | 1991-01-15 |
| 4978597 | Image forming method and image forming apparatus utilizing a toner-carrying member with spherical concavities | Toshiaki Nakahara | 1990-12-18 |
| 4957840 | Developer and image forming device | Kiichiro Sakashita, Toshiaki Nakahara, Naoki Matsushige, Satoshi Yoshida, Masatsugu Fujiwara +1 more | 1990-09-18 |
| 4952476 | Electrophotographic magnetic toner containing polyalkylene and vinyl polymer | Kiichiro Sakashita, Toshiaki Nakahara, Satoshi Yoshida | 1990-08-28 |
| 4857432 | Toner for developing electrostatic charge image | Toshiaki Nakahara, Keita Nozawa | 1989-08-15 |
| 4737432 | Positively chargeable toner and developer for developing electrostatic images contains di-organo tin borate charge controller | Katsuhiko Tanaka, Naoto Kitamori, Tsutomu Kukimoto, Masaki Uchiyama, Yasuo Mitsuhashi | 1988-04-12 |