Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5144343 | Image recording method and apparatus | Sayoko Oba, Kenji Okuna, Katsumi Muroi, Katsubumi Ouchi, Ryoji Kojima | 1992-09-01 |
| 5032570 | Method for producing ceramic superconducting material using intermediate products | Yasunobu Ogata, Toshiyuki Kasakoshi, Yusuke Iyori, Kenzi Maruta | 1991-07-16 |
| 5021810 | Printing machine | Katsumi Muroi, Kenji Okuna, Hidefumi Otsuka, Kastubumi Ouchi, Ryoji Kojima | 1991-06-04 |
| 4977415 | Electrostatic recording head, image recording apparatus, developing agent supplying device, display device and method of producing electrostatic recording head | Sayoko Oba, Katsumi Muroi, Kenji Okuna, Hidefumi Ohtsuka, Ryoji Kojima +1 more | 1990-12-11 |
| 4888464 | Heat roll for electrophotography | Ryoichi Shibata, Kiyoshi Kinugawa, Yasuo Sawano | 1989-12-19 |
| 4776070 | Directly-heating roller for fixing toner images | Ryoichi Shibata | 1988-10-11 |
| 4777499 | Method and apparatus for image recording | Kenji Okuna, Hidefumi Ohtsuka, Sayoko Ohba, Takaomi Nishigaito, Katsumi Muroi +1 more | 1988-10-11 |
| 4724305 | Directly-heating roller for fuse-fixing toner images | Ryoichi Shibata, Yukiharu Takada | 1988-02-09 |
| 4663193 | Process for manufacturing magnetic recording medium | Juro Endo, Shiro Murakami, Shigeo Fujii, Masayuki Nakao | 1987-05-05 |
| 4640880 | Electrophotographic process with magnetic brush development using semiconductive ferrite carriers | Tsuneaki Kawanishi, Yasuki Mori, Koji Noguchi | 1987-02-03 |
| 4623603 | Spherical electrophotographic magnetoplumbite-type hexagonal ferrite carrier powder | Minoru Chinju | 1986-11-18 |
| 4439794 | Magnetic head | Yoshihiro Shiroishi, Hideo Fujiwara, Takeshi Kimura, Noriyuki Kumasaka, Nobuo Kobayashi +4 more | 1984-03-27 |