Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11143979 | Image forming apparatus having simple configuration and capable of measuring toner current included in developing current, and accurately calculating toner charge amount based on measurement result | Tamotsu Shimizu, Mitsuhiro Hashimoto, Takahiro Okubo, Yohei Wakasa | 2021-10-12 |
| 11067923 | Image forming apparatus capable of predicting the level of occurrence of a transfer memory and the cause of occurrence thereof | Tamotsu Shimizu, Takahiro Okubo, Mitsuhiro Hashimoto, Shiro Kaneko | 2021-07-20 |
| 10996585 | Image forming apparatus | Tamotsu Shimizu, Mitsuhiro Hashimoto, Takahiro Okubo, Shiro Kaneko | 2021-05-04 |
| 10921729 | Image forming apparatus | Tamotsu Shimizu, Yasushi Imanishi, Satoshi Sunayama, Ai Takagami, Kanako Kikuchi | 2021-02-16 |