Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12422764 | Toner container and image forming apparatus | Hideo Yoshizawa, Kei Saito | 2025-09-23 |
| 12167537 | Circuit board unit, detachable unit, and image forming apparatus | Yuzuru Ozawa | 2024-12-10 |
| 12130565 | Circuit board unit, attachment unit, and image forming apparatus | — | 2024-10-29 |
| 11754947 | Toner container including a rotatable container body, a gear, and a held portion | Hideo Yoshizawa, Kei Saito | 2023-09-12 |
| 11640124 | Developing device and image forming apparatus incorporating same | Kentarou Matsumoto | 2023-05-02 |
| 11573506 | Powder container, developing device, and image forming apparatus with multiple joints to prevent leakage | Ryusuke Mase | 2023-02-07 |
| 11256194 | Developing device, process cartridge, and image forming apparatus | Yuuki Tsuchiya, Yoshihiro Fujiwara, Ryusuke Mase, Naohiro Kawashima, Hotaru HASHIKAWA | 2022-02-22 |
| 11163246 | Developing device including a conveyor with a space between blades and image forming apparatus including same | Tatsuya OHHIRA, Koichi Yamazaki, Takahiro Adachi | 2021-11-02 |
| 11112731 | Developer container, developing device, and image forming apparatus | Naohiro Kawashima, Yoshihiro Fujiwara, Yuuki Tsuchiya, Ryusuke Mase, Tsutomu Iwata | 2021-09-07 |
| 11086251 | Image forming apparatus including control circuitry to execute a warm-up operation | Ryusuke Mase, Yoshihiro Fujiwara, Naohiro Kawashima, Yuuki Tsuchiya | 2021-08-10 |
| 10705484 | Developing device, process cartridge, and image forming apparatus | Yoshihiro Fujiwara, Naohiro Kawashima, Ryusuke Mase, Yuuki Tsuchiya | 2020-07-07 |
| 10444664 | Conveying device and image forming apparatus incorporating the conveying device | — | 2019-10-15 |
| 9772579 | Developing device and image forming apparatus incorporating same | Akira Azami, Yoshiko Ogawa, Masaaki Yamada, Yoshihiro Fujiwara, Noriyuki Kimura +6 more | 2017-09-26 |
| 9625851 | Developing device and image forming apparatus incorporating same | Akira Azami, Yoshiko Ogawa, Masaaki Yamada, Yoshihiro Fujiwara, Noriyuki Kimura +6 more | 2017-04-18 |
| 9405223 | Developing device, image forming apparatus, and process cartridge | Noriyuki Kimura, Kenji Kikuchi, Yoshihiro Fujiwara, Shuntaroh Tamaki | 2016-08-02 |
| 9354586 | Communication connector and image forming apparatus | — | 2016-05-31 |
| 9310715 | Developing device and image forming apparatus | Yoshio Hattori, Yoshiyuki Fukuda, Sho Akiyama, Noriyuki Kimura | 2016-04-12 |
| 9176430 | Developing device and image forming apparatus incorporating same | Hideo Yoshizawa, Noriyuki Kimura, Yoshihiro Fujiwara, Sohichi Abe | 2015-11-03 |
| 9170530 | Powder container and image forming apparatus incorporating same | Yuuki Satoh, Takuya Seshita, Toshiki Hayashi, Masashi Nagayama, Hiroyuki Uenishi +1 more | 2015-10-27 |
| 9134697 | Powder container, powder supply assembly, and image forming apparatus in which a powder outlet faces in an opposite direction as an opening of a container body | Emi Kita | 2015-09-15 |
| 9116468 | Powder storage container and image forming apparatus in which a gripping part includes a powder loading port and a sealing member | Seiji Terazawa, Atsushi Inoue, Kaori Mitsuishi, Tadashi Hayakawa, Michitaka Sasaki +1 more | 2015-08-25 |
| 9109633 | Driving force transmission mechanism and image forming apparatus | Hideo Yoshizawa, Kiyonori Tsuda, Takuzi Yoneda, Yutaka Takahashi, Emi Kita +1 more | 2015-08-18 |
| 8923726 | Image forming apparatus incorporating developing device with first and second seals | Kiyonori Tsuda, Hideo Yoshizawa, Kohichi Utsunomiya, Takuzi Yoneda, Yutaka Takahashi +1 more | 2014-12-30 |
| 8843015 | Imaging device, image forming apparatus, and process cartridge | Kohichi Utsunomiya, Kiyonori Tsuda, Hideo Yoshizawa, Takuzi Yoneda, Emi Kita +1 more | 2014-09-23 |
| 8843019 | Development device and image forming apparatus incorporating same | Hideo Yoshizawa, Kiyonori Tsuda, Takuzi Yoneda, Emi Kita, Yutaka Takahashi +1 more | 2014-09-23 |