Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5909652 | Radio communication system and radio communication terminal | Hiroyuki Ishikawa, Takao Uchikura | 1999-06-01 |
| 5144343 | Image recording method and apparatus | Sayoko Oba, Kenji Okuna, Katsubumi Ouchi, Tsutomu Iimura, Ryoji Kojima | 1992-09-01 |
| 5021810 | Printing machine | Kenji Okuna, Hidefumi Otsuka, Kastubumi Ouchi, Tsutomu Iimura, Ryoji Kojima | 1991-06-04 |
| 4982423 | Data storage apparatus | — | 1991-01-01 |
| 4977415 | Electrostatic recording head, image recording apparatus, developing agent supplying device, display device and method of producing electrostatic recording head | Sayoko Oba, Kenji Okuna, Hidefumi Ohtsuka, Tsutomu Iimura, Ryoji Kojima +1 more | 1990-12-11 |
| 4777499 | Method and apparatus for image recording | Kenji Okuna, Hidefumi Ohtsuka, Sayoko Ohba, Takaomi Nishigaito, Tsutomu Iimura +1 more | 1988-10-11 |
| 4749458 | Free-flow electrophoretic separation method and apparatus therefor | Kosai Hiratsuka, Shoji Yoshinaga, Toji Nakatsui, Chikao Oda, Kiyoshi Fujiwara | 1988-06-07 |
| 4698142 | Free-flow electrophoretic separation method and apparatus therefor | Kosai Hiratsuka, Shoji Yoshinaga, Toji Nakatsui, Chikao Oda, Kiyoshi Fujiwara | 1987-10-06 |
| 4559060 | Upgrading method of low-rank coal | Akio Yamamoto, Yoichi Nakamura, Toshihiko Takahashi, Morihisa Maruko | 1985-12-17 |
| 4523927 | Method of coal upgrading | Toshio Kuge, Hiroshi Yokoyama, Shunsuke Nogita, Yoichi Nakamura | 1985-06-18 |
| 4511363 | Method of upgrading low-rank coal | Yoichi Nakamura, Akio Yamamoto, Shunsuke Nogita, Toshio Kuge | 1985-04-16 |