Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830857 | Image forming method, image forming apparatus, process cartridge and photoconductor | Toshiyuki Kabata | 2004-12-14 |
| 6821694 | Image forming method, image forming apparatus, process cartridge and photoconductor | Toshiyuki Kabata | 2004-11-23 |
| 6649313 | Photoreceptor, method of evaluating a photoreceptor, and method of producing the photoreceptor | Toshiyuki Kabata, Junichi Yamazaki, Katsuhiko Tani, Noriyuki Iwata, Takuji Katoh +2 more | 2003-11-18 |
| 6534227 | Photoreceptor, method of evaluating the photoreceptor, method of producing the photoreceptor, and image formation apparatus using the photoreceptor | Toshiyuki Kabata, Junichi Yamazaki, Katsuhiko Tani, Noriyuki Iwata, Takuji Katoh +2 more | 2003-03-18 |
| 6521388 | Electrophotographic image forming apparatus, and photoreceptor therefor | Toshiyuki Kabata | 2003-02-18 |
| 5670284 | Electrophotographic photoconductor | Hiroyuki Kishi, Kiyoshi Taniguchi, Tomohiro Inoue | 1997-09-23 |
| 5608010 | Polymers of acrylic acid ester derivatives having a triphenyl amine skeleton | Hiroshi Tamura, Naoshi Mishima, Masaomi Sasaki | 1997-03-04 |
| 5488137 | Acrylic acid ester derivative having a triphenyl amine skeleton | Hiroshi Tamura, Naoshi Mishima, Masaomi Sasaki | 1996-01-30 |
| 5427880 | Electrophotographic Photoconductor | Hiroshi Tamura | 1995-06-27 |
| 5339138 | Electrophotographic image formation method | Naoshi Mishima, Kiyoshi Taniguchi, Hiroyuki Kishi, Tomohiro Inoue, Yoshiaki Kawasaki | 1994-08-16 |
| 5322753 | Electrophotographic photoconductor and acrylic acid ester polymer for use in the same | Hiroshi Tamura, Naoshi Mishima, Masaomi Sasaki | 1994-06-21 |
| 5135829 | Electrophotographic photoconductor having intermediate layer comprising modified indium oxide | Kiyoshi Taniguchi, Kayoko Suzuki | 1992-08-04 |
| 4970131 | Electrophotographic photoconductor having overcoat layer | Kiyoshi Taniguchi, Kayoko Yokoyama | 1990-11-13 |
| 4946766 | Electrophotographic photoconductor having intermediate layer comprising indium oxide | — | 1990-08-07 |
| 4906545 | Electrophotographic photoconductor with undercoat layer containing metal oxide on support | Kiyoshi Taniguchi, Kayoko Yokoyama, Katsuichi Ohta | 1990-03-06 |
| 4863822 | Electrophotographic photoconductor comprising charge generating and transport layers containing adjuvants | Kiyoshi Taniguchi, Katsuichi Ohta, Kayoko Yokoyama, Minoru Umeda | 1989-09-05 |
| 4830942 | Electrophotographic photoconductor | Michio Kimura, Masafumi Ohta, Mitsuru Hashimoto | 1989-05-16 |
| 4822705 | Electrophotographic photoconductor with layer preventing charge injection | Kiyoshi Taniguchi, Katsuichi Ohta, Minoru Umeda, Kayoko Yokoyama | 1989-04-18 |
| 4481271 | Layered electrophotographic photoconductor containing a hydrazone | Mitsuru Hashimoto, Kiyoshi Sakai, Tatsuya Katoh, by Mankichi Katoh, legal representative | 1984-11-06 |
| 4390608 | Layered charge generator/transport electrophotographic photoconductor uses bisazo pigment | Mitsuru Hashimoto, Masaomi Sasaki, Tatsuya Katoh, by Mankichi Katoh, legal representative | 1983-06-28 |
| 4284698 | Layered electrophotographic photoconductor | Takeo Kazami, Takamichi Enomoto, Tatuya Kato | 1981-08-18 |