Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10317809 | Image forming apparatus and unit for image forming apparatus | Masaki Hirakata, Hideya KATSUHARA, Yasutaka MATSUMOTO, Takeshi Iwanaga | 2019-06-11 |
| 10073364 | Electrophotographic photoreceptor and image forming apparatus | Yoichi KIGOSHI, Masaki Hirakata, Satomi KASHIWAGI, Takeshi Iwanaga, Takashi Imai | 2018-09-11 |
| 10001714 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Masaki Hirakata, Takeshi Iwanaga, Hideya KATSUHARA, Yoichi KIGOSHI, Takashi Imai +1 more | 2018-06-19 |
| 9904204 | Unit for image forming apparatus, process cartridge, image forming apparatus, and electrophotographic photoreceptor | Takeshi Iwanaga, Takashi Imai, Hideya KATSUHARA, Masaki Hirakata, Yoichi KIGOSHI +1 more | 2018-02-27 |
| 9864286 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Fumiaki Mera, Masaki Hirakata, Hideya KATSUHARA, Yoichi KIGOSHI, Satomi KASHIWAGI +5 more | 2018-01-09 |
| 9341963 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Masaki Hirakata, Hideya KATSUHARA, Takeshi Iwanaga, Takashi Imai, Tomoya Sasaki +2 more | 2016-05-17 |
| 8993206 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Takeshi Iwanaga, Masaki Hirakata, Hideya KATSUHARA, Tomoya Sasaki, Takashi Imai | 2015-03-31 |
| 8574798 | Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the same | Takeshi Iwanaga, Masayuki Nishikawa, Shigeru Yagi | 2013-11-05 |
| 8404415 | Electrophotographic photoreceptor, and process cartridge and image forming apparatus using the same | Takeshi Iwanaga, Shigeru Yagi | 2013-03-26 |
| 8357478 | Electrophotographic photoconductor, process cartridge, and image forming apparatus | Hideya KATSUHARA, Shigeru Yagi, Takashi Imai, Takeshi Iwanaga | 2013-01-22 |
| 8158316 | Electrophotographic photoreceptor, process cartridge and image forming apparatus | Takeshi Iwanaga, Shigeru Yagi | 2012-04-17 |
| 7906261 | Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the same | Shigeru Yagi, Takeshi Iwanaga, Masayuki Nishikawa | 2011-03-15 |
| 6429465 | Nitride semiconductor device and method of manufacturing the same | Shigeru Yagi, Toshihiko Suzuki, Seiji Suzuki, Takeshi Iwanaga | 2002-08-06 |
| 6297442 | Solar cell, self-power-supply display device using same, and process for producing solar cell | Shigeru Yagi, Seiji Suzuki | 2001-10-02 |
| 6268884 | Image recording apparatus and method as well as image reproducing apparatus and method | Shigeru Yagi | 2001-07-31 |
| 5236767 | Thermal transfer recording film | Kenji Ogi, Koichi Tanaka, Eiichi Akutsu, Toshihiko Shigeeda | 1993-08-17 |
| 5071502 | Heat-sensitive recording material | Ken Hashimoto | 1991-12-10 |