Issued Patents All Time
Showing 76–100 of 100 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE32330 | Method of maintaining the correct conditions of an electrophotographically duplicated image | Seiichi Miyakawa, Susumu Tatsumi | 1987-01-13 |
| 4625676 | Developing device | Toshio Kaneko, Fuchio Kanno, Wataru Yasuda | 1986-12-02 |
| 4624545 | Developing device with regulated developer supply | Wataru Yasuda, Toshio Kaneko, Fuchio Kanno | 1986-11-25 |
| 4576463 | Developing apparatus for electrostatic photography | Kazuo Kobayashi | 1986-03-18 |
| 4575218 | Developing apparatus for electrostatic photography | Kazuo Kobayashi | 1986-03-11 |
| 4575220 | Developing device | Toshio Kaneko, Fuchio Kanno, Wataru Yasuda | 1986-03-11 |
| 4564285 | Developing device having dispersed floating electrodes in a dielectric layer | Wataru Yasuda, Fuchio Kanno | 1986-01-14 |
| 4561381 | Voltage-controlled developing device | Toshio Kaneko, Fuchio Kanno, Wataru Yasuda | 1985-12-31 |
| 4538898 | Developing device | Fuchio Kanno, Toshio Kaneko | 1985-09-03 |
| 4528937 | Device for forming a developer film | Fuchio Kanno, Kazuo Kobayashi, Wataru Yasuda, Hiromi Ogiyama | 1985-07-16 |
| 4445771 | Developing apparatus for electrostatic photography | Kazuo Kobayashi | 1984-05-01 |
| 4415989 | Dual conductor current access magnetic bubble memory | — | 1983-11-15 |
| 4412736 | Collection of suspended toner particles | Misao Tanzawa | 1983-11-01 |
| 4408863 | Transfer medium separating device | Yoshihiro Ogata, Harumi Takahashi, Koji Hirakura | 1983-10-11 |
| 4406535 | Development apparatus | Nobuyuki Yanagawa | 1983-09-27 |
| 4387443 | Magnetic bubble device | — | 1983-06-07 |
| 4367032 | Electrostatic copying apparatus | Koji Hirakura, Yoshihiro Ogata, Harumi Takahashi | 1983-01-04 |
| 4319832 | Toner separation and recovery apparatus | Masayuki Hayashi, Yutaka Koizumi, Misao Tanzawa | 1982-03-16 |
| 4306804 | Exposure control and other component control for electrostatic copying machine | Seiichi Miyakawa, Susumu Tatsumi | 1981-12-22 |
| 4226525 | Electrostatic copying machine | Seiichi Miyakawa, Susumu Tatsumi | 1980-10-07 |
| 4215930 | Method of maintaining the correct conditions of an electrophotographically duplicated image | Seiichi Miyakawa, Susumu Tatsumi | 1980-08-05 |
| 4210864 | Apparatus for sensing toner density using a stationary ferromagnetic mass within the toner to increase sensitivity | Seiichi Miyakawa, Susumu Tatsumi, Yoshihiro Ogata | 1980-07-01 |
| 4205081 | Composition and method for preventing or treating swine dysentery | Takeshi Asano, Kazuo Mizuochi, Kanemichi Sasaki | 1980-05-27 |
| 4200391 | Electrostatographic apparatus comprising document density sensing means | Susumu Tatsumi, Chikara Imai | 1980-04-29 |
| 4195260 | Apparatus for sensing deterioration of developing substance including ferromagnetic carrier and non-magnetic toner particles | Seiichi Miyakawa, Susumu Tatsumi | 1980-03-25 |