Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5344732 | Multi-color electrophotographic image formation method | Shunichi Chiba, Yasuo Asahina, Yosihisa Okamoto, Kayo Makita | 1994-09-06 |
| 5270783 | Image forming equipment having improved toner sensing | Takashi Bisaiji, Kouji Hayashi, Noboru Sawayama, Takeyoshi Sekine, Takayuki Maruta +5 more | 1993-12-14 |
| 5227842 | Electrophotographic image forming apparatus which controls developer bias based on image irregularity | Kouji Hayashi, Takashi Bisaiji, Norimitsu Kikuchi, Takeyoshi Sekine, Noboru Sawayama +4 more | 1993-07-13 |
| 5061588 | Dry type toner for electrophotography | Hiroyuki Fushimi, Yasuo Asahina, Mitsuo Aoki, Kayo Makita | 1991-10-29 |
| 4980258 | Dry type developer for electrophotography | Mitsuo Aoki, Yasuo Asahina, Hiroyuki Fushimi, Kayo Makita, Yasuaki Iwamoto | 1990-12-25 |
| 4945022 | Triboelectric charge application member for toner comprising copolymer of fluoro-olefin monomer and unsaturated silicon monomer | Yasuo Asahina, Hiroyuki Fushimi, Yasuaki Iwamoto | 1990-07-31 |
| 4933250 | Magenta color toner for developing latent electrostatic images in color electrophotography | Yasuo Asahina, Mitsuo Aoki, Hiroyuki Fushimi, Kayo Makita | 1990-06-12 |
| 4927728 | Carrier particles for use in a two-component dry-type developer | Tetsuo Isoda, Yoichiro Watanabe, Mitsuo Aoki | 1990-05-22 |
| 4908290 | Toner for developing latent electrostatic images | Yoichiro Watanabe, Mitsuo Aoki, Tetsuo Isoda, Fumihiro Sasaki, Karumi Kakigawa | 1990-03-13 |
| 4841331 | Triboelectric charge application member for toner | Yasuo Asahina, Hiroyuki Fushimi, Yasuaki Iwamoto | 1989-06-20 |
| 4672016 | Carrier particles for use in a developer for developing latent electrostatic images comprise organic tin compound, silicone resin and conductive material | Tetsuo Isoda, Youichirou Watanabe, Mitsuo Aoki | 1987-06-09 |
| 4584254 | Silicone resin coated carrier particles for use in a two-component dry-type developer | Tetsuo Isoda, Yoichiro Watanabe, Mitsuo Aoki | 1986-04-22 |