Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12416886 | Heater including a plurality of heat generation members, fixing apparatus, and image forming apparatus | Kazuhiro Doda, Ken Nakagawa, Tsuguhiro Yoshida, Yutaka Sato | 2025-09-16 |
| 12405558 | Fixing device provided with heater and image forming apparatus | Tsuguhiro Yoshida | 2025-09-02 |
| 12321114 | Fixing apparatus having a nip area, and image forming apparatus | Kazuhiro Doda, Tsuguhiro Yoshida | 2025-06-03 |
| 12038703 | Fixing unit and image forming apparatus | Kazuhiro Doda | 2024-07-16 |
| 12001157 | Fixing device provided with heater and image forming apparatus | Tsuguhiro Yoshida | 2024-06-04 |
| 11835896 | Fixing device provided with heater and image forming apparatus | Tsuguhiro Yoshida | 2023-12-05 |
| 11835909 | Image forming apparatus including heater powered with cycle-switched current and fixing device including the heater | Nozomu Nakajima, Atsushi Nakamoto | 2023-12-05 |
| 11774891 | Heater including a plurality of heat generation members, fixing apparatus, and image forming apparatus | Kazuhiro Doda, Ken Nakagawa, Tsuguhiro Yoshida, Yutaka Sato | 2023-10-03 |
| 11709446 | Fixing unit and image forming apparatus | Kazuhiro Doda | 2023-07-25 |
| 11669032 | Fixing apparatus having a nip area, and image forming apparatus | Kazuhiro Doda, Tsuguhiro Yoshida | 2023-06-06 |
| 11531294 | Image forming apparatus including a plurality of heat generating elements | Tsuguhiro Yoshida, Kazuhiro Doda, Yutaka Sato, Ken Nakagawa | 2022-12-20 |
| 11507001 | Image forming apparatus including a plurality of heat generating elements | Tsuguhiro Yoshida, Kazuhiro Doda | 2022-11-22 |
| 11442385 | Heater including a plurality of heat generation members, fixing apparatus, and image forming apparatus | Kazuhiro Doda, Ken Nakagawa, Tsuguhiro Yoshida, Yutaka Sato | 2022-09-13 |
| 11281135 | Fixing apparatus switching heat generation members and image forming apparatus | Yutaka Sato, Kazuhiro Doda, Tsuguhiro Yoshida | 2022-03-22 |
| 11221575 | Image forming apparatus including a plurality of heat generating elements | Tsuguhiro Yoshida, Kazuhiro Doda, Yutaka Sato, Ken Nakagawa | 2022-01-11 |
| 11204571 | Heating apparatus including a plurality of heat generating elements, fixing apparatus, and image forming apparatus | Tsuguhiro Yoshida, Kazuhiro Doda | 2021-12-21 |
| 11194272 | Fixing apparatus having a nip area, and image forming apparatus | Kazuhiro Doda, Tsuguhiro Yoshida | 2021-12-07 |
| 11092916 | Image forming apparatus including a plurality of heat generating elements | Tsuguhiro Yoshida, Kazuhiro Doda | 2021-08-17 |
| 11073778 | Heater including a plurality of heat generation members, fixing apparatus, and image forming apparatus | Kazuhiro Doda, Ken Nakagawa, Tsuguhiro Yoshida, Yutaka Sato | 2021-07-27 |
| 11048198 | Image forming apparatus | Kazuhiro Doda, Tsuguhiro Yoshida, Yutaka Sato | 2021-06-29 |
| 10921737 | Fixing apparatus switching heat generation members and image forming apparatus | Yutaka Sato, Kazuhiro Doda, Tsuguhiro Yoshida | 2021-02-16 |
| 10884361 | Image forming apparatus that switches power supply to plurality of heating elements | Kazuhiro Doda, Tsuguhiro Yoshida, Yutaka Sato, Ken Oi | 2021-01-05 |
| 10852677 | Film used for fixing device and fixing device including the film | Yutaka Sato, Takashi Narahara, Takeshi Shinji, Kazuhiro Doda | 2020-12-01 |
| 10838336 | Fixing device and image forming apparatus that control power supply to heat generation members | Tsuguhiro Yoshida, Kazuhiro Doda, Yutaka Sato | 2020-11-17 |
| 10591856 | Roller with filler bundle in elastic layer and fixing device | Yutaka Sato, Kazuhiro Doda, Tsuguhiro Yoshida, Jun Miura | 2020-03-17 |