Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12304224 | Image forming apparatus | Yoshihiko Tanaka, Takatoshi Tanaka, Fumihiko Yamaya, Naoki Matsushita, Hiroki Katayama | 2025-05-20 |
| 11852988 | Image forming apparatus with improved vibration rigidity | Shoji Yamamoto, Akira Yoshimura, Shogo Nagamine, Naoki Matsushita, Yoshihiko Tanaka +4 more | 2023-12-26 |
| 11820158 | Image forming apparatus | Yoshihiko Tanaka, Takatoshi Tanaka, Fumihiko Yamaya, Naoki Matsushita, Hiroki Katayama | 2023-11-21 |
| 11385457 | Optical scanning device having rotating polygon mirror, and image forming apparatus including the same | Yoshihiko Tanaka, Hisanori Kobayashi, Naoki Matsushita, Takatoshi Tanaka, Hiroki Katayama | 2022-07-12 |
| 11383413 | Manufacturing method of polygonal mirror, polygonal mirror, deflector, optical scanning apparatus and image forming apparatus | Fumihiko Yamaya, Hiroki Katayama, Yoshihiko Tanaka, Takatoshi Tanaka, Atsushi Takata +1 more | 2022-07-12 |
| 11366310 | Polygonal mirror, deflector, optical scanning apparatus and image forming apparatus | Naoki Matsushita, Atsushi Takata, Yoshihiko Tanaka, Takatoshi Tanaka, Fumihiko Yamaya +1 more | 2022-06-21 |
| 11353805 | Image forming apparatus to address vibration rigidity of a scanner unit | Shoji Yamamoto, Akira Yoshimura, Shogo Nagamine, Naoki Matsushita, Yoshihiko Tanaka +4 more | 2022-06-07 |
| 11249303 | Rotary polygon mirror, light deflecting unit, and optical scanning apparatus including light deflecting unit | Hisanori Kobayashi, Yoshihiko Tanaka, Naoki Matsushita, Takatoshi Tanaka, Hiroki Katayama | 2022-02-15 |
| 11086248 | Image forming apparatus with fan configured for dust-resistant cooling of optical scanning unit | Yoshihiko Tanaka, Hisanori Kobayashi, Takatoshi Tanaka, Naoki Matsushita, Hiroki Katayama | 2021-08-10 |
| 11022908 | Image forming apparatus | Shoji Yamamoto, Akira Yoshimura, Shogo Nagamine, Naoki Matsushita, Yoshihiko Tanaka +4 more | 2021-06-01 |
| 10649360 | Optical scanning device | Jun Nagatoshi, Shunsuke Tanaka | 2020-05-12 |
| 10281834 | Optical scanning device | Jun Nagatoshi, Shunsuke Tanaka | 2019-05-07 |
| 9977237 | Optical scanning device, and image forming apparatus equipped with the same | Akihiro Fukutomi, Tomoyuki Kawano | 2018-05-22 |
| 9740135 | Optical scanning device | Jun Nagatoshi, Shunsuke Tanaka | 2017-08-22 |
| 9558431 | Optical scanning apparatus | Jun Nagatoshi | 2017-01-31 |
| 9557702 | Image forming apparatus with curl correcting unit | Wataru Uchida, Ryo Iwasawa, Tomooku Koyama, Taro Ishifune, Ken Murooka +1 more | 2017-01-31 |
| 9411157 | Optical scanning device, and image forming apparatus equipped with the same | Akihiro Fukutomi, Tomoyuki Kawano | 2016-08-09 |
| 9075386 | Image forming apparatus with a curl correcting unit | Wataru Uchida, Ryo Iwasawa, Tomooku Koyama, Taro Ishifune, Ken Murooka +1 more | 2015-07-07 |
| 6437817 | Image forming apparatus and image forming method | Jiro Ishizuka | 2002-08-20 |
| 5966578 | Heat-pressure fixing device and silicone rubber roller | Osamu Soutome, Kazuo Kishino, Masaaki Takahashi, Jiro Ishizuka, Hideo Kawamoto | 1999-10-12 |