Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11209752 | Developing device and image forming apparatus therewith | Asami Sasaki, Akira Matayoshi, Norio Kubo, Koji Suenami, Yuji Toyota +2 more | 2021-12-28 |
| 11112732 | Image forming device | Tamotsu Shimizu, Yasuhiro Tauchi, Akira Matayoshi | 2021-09-07 |
| 11048192 | Image forming apparatus capable of suppressing occurrence of image defects in response to difference in carrier resistance and obtaining high image quality | Yuji Toyota, Yasuhiro Tauchi, Norio Kubo, Akira Matayoshi | 2021-06-29 |