Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816840 | Optical recording medium and method for producing the same | Yoichi Osato, Ichiro Saito | 1989-03-28 |
| 4760007 | Process of developing latent electrostatic image using dry magnetic developer | Tetsuo Hasegawa, Shigeo Kato, Yoshihiro Nishikawa | 1988-07-26 |
| 4745030 | Electrostatic recording device | Kozo Arahara, Tatsuo Takeuchi | 1988-05-17 |
| 4738908 | Photothermal transducing type of recording medium | Yoshihiro Oguchi, Kazuharu Katagiri | 1988-04-19 |
| 4734359 | Thermal recording material for display and image display device utilizing the same | Yoshihiro Oguchi, Toshikazu Ohnishi, Kozo Arahara, Akihiro Mouri, Katsumi Kurematsu +2 more | 1988-03-29 |
| 4693951 | Image forming method and image bearing member | Yoshihiro Oguchi, Kazuharu Katagiri | 1987-09-15 |
| 4675767 | Opto-magnetic recording medium | Yoichi Osato, Ichiro Saito, Kozo Arao, Eiichi Fujii | 1987-06-23 |
| 4673630 | Photoconductive film and electrophotographic photosensitive member contains azulenium salt | Kazuhara Katagiri, Yoshihiro Oguchi, Takeshi Ohtake, Kozo Arao, Makoto Kitahara | 1987-06-16 |
| 4629670 | Photoconductive film of azulenium salt and electrophotographic photosensitive member | Kazuharu Katagiri, Yoshihiro Oguchi, Takeshi Ohtake, Kozo Arao | 1986-12-16 |
| 4614951 | Optical recording medium | Yoichi Osato, Ichiro Saito | 1986-09-30 |
| 4579799 | Photoconductive film electrophotographic photosensitive member therewith | Kazuharu Katagiri, Yoshihiro Oguchi | 1986-04-01 |
| 4565761 | Electrophotographic process utilizing an azulenium salt-containing photosensitive member | Kazuharu Katagiri, Yoshihiro Oguchi | 1986-01-21 |
| 4551404 | Disazo electrophotographic photosensitive member | Masaaki Hiro, Shozo Ishikawa, Kazuharu Katagiri, Hideyuki Takahashi | 1985-11-05 |
| 4548886 | Radiation sensitive organic thin film comprising an azulenium salt | Kazuharu Katagiri, Yoshihiro Oguchi | 1985-10-22 |
| 4481273 | Electrophotographic photosensitive member and preparation thereof | Kazuharu Katagiri, Yoshihiro Oguchi | 1984-11-06 |
| 4471694 | Printing process for transferring fixed image from master | Tadaji Fukuda, Junichiro Kanbe | 1984-09-18 |
| 4456671 | Electrophotographic photosensitive member having a photosensitive layer containing a hydrazone compound | Minoru Mabuchi, Naoto Fujimura, Shozo Ishikawa, Kiyoshi Sakai, Masaki Kuribayashi | 1984-06-26 |
| 4454211 | Electrophotographic photosensitive member with pyrazoline charge transport material | Shozo Ishikawa | 1984-06-12 |
| 4446217 | Electrophotographic photosensitive member having a hydrazone containing layer | Shozo Ishikawa | 1984-05-01 |
| 4427753 | Electrophotographic photosensitive member with disazo or trisazo compound | Naoto Fujimura, Takashi Tanaka, Takeshi Fujita, Masakazu Matsumoto, Norie Takebayashi +1 more | 1984-01-24 |
| 4423129 | Electrophotographic member having layer containing methylidenyl hydrazone compound | Kiyoshi Sakai, Minoru Mabuchi, Shozo Ishikawa, Katsunori Watanabe | 1983-12-27 |
| 4399208 | Electrophotographic photosensitive member | Norie Takebayashi, Kiyoshi Sakai, Minoru Mabuchi, Shozo Ishikawa | 1983-08-16 |
| 4340660 | Toner for development having crosslinked polymers | Masashi Kiuchi, Hiroshi Fukumoto, Takashi Hino, Masaki Uchiyama, Yasuo Mitsuhashi | 1982-07-20 |
| 4336318 | Electrostatic image developing method | Hiroshi Fukumoto | 1982-06-22 |
| 4299900 | Electrostatic image magnetic developing process | Yasuo Mitsuhashi, Masashi Kiuchi, Hiroshi Fukumoto, Takashi Hino, Masaki Uchiyama | 1981-11-10 |