Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5857138 | Image forming apparatus capable of double-sided copying and provided with intermediate tray on which feed direction of copy sheet is inverted | Kazumi Iida, Takaichi Kitagawa | 1999-01-05 |
| 4686935 | Developing device | Toshikazu Matsui, Nobuyasu Honda, Minoru Nakao, Nobuyuki Tsuji | 1987-08-18 |
| 4652510 | Method for forming negative and positive images in electrophotographic process | Toshikazu Matsui, Yuuji Hasegawa, Masahiko Maeda, Nobuyuki Tsuji, Akira Horiuchi +1 more | 1987-03-24 |
| 4576465 | Method and apparatus for adjusting toner concentration of two-component type developer | Yuuji Hasegawa, Toshikazu Matsui | 1986-03-18 |
| 4540645 | Magnetic brush development method | Nobuyasu Honda, Toshikazu Matsui, Toshimitsu Ikeda, Kenji Takahashi, Hideo Fukuda +2 more | 1985-09-10 |
| 4477551 | Photosensitive layer for electrophotography | Yoshiaki Kato, Yasushi Kamezaki | 1984-10-16 |
| 4469769 | Photosensitive material for electrophotography contains halo-benzoquinone sensitizer | Toru Nakazawa, Yasushi Kamezaki | 1984-09-04 |
| 4447514 | Organic photosensitive material for electrophotography comprising polyvinylcarbazole and pyrene or phenanthrene | Toru Nakazawa, Yasushi Kamezaki | 1984-05-08 |
| 4438187 | Photosensitive composition for electrophotography with chloronaphthoquinones | Yoshiaki Kato | 1984-03-20 |
| 4430410 | Method and apparatus for developing latent electrostatic images | Tatsuo Aizawa, Shoji Matsumoto, Kaoru Sakata, Toshikazu Matsui, Toshimitsu Ikeda +1 more | 1984-02-07 |
| 4424269 | Electrophotographic CdS or CdSSe with ozone deterioration inhibitor | Hideyuki Sasaki, Toru Nakazawa, Yoshiaki Kato, Hideo Fukuda, Yasushi Kamezaki | 1984-01-03 |
| 4413047 | Cadmium photoconductor with (dialkylpyrophosphato) organic titanate additive | Yoshiaki Kato, Hideo Fukuda, Toru Nakazawa, Yasushi Kamezaki, Hideyuki Sasaki | 1983-11-01 |
| 4413046 | Disazo photoconductor with nitrophthalic anhydride sensitizer | Toru Nakazawa | 1983-11-01 |
| 4391892 | Multiple copy electrophotographic process using dye sensitized ZnO | Yasushi Kamezaki, Eiichi Inoue, Hitoshi Nishihama, Joji Matsumoto | 1983-07-05 |
| 4388392 | Laminated photosensitive plate for electrophotography having an electron donative polymer and phenanthrene charge transport layer | Yoshiaki Kato | 1983-06-14 |
| 4380196 | Plate for lithography or offset printing | Yoshiaki Kato, Yasuo Ueda, Yasusuke Tohi, Tatsuo Aizawa | 1983-04-19 |