Issued Patents All Time
Showing 1–25 of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10819239 | Switched-mode power supply having a load increase circuit | Shiro Ueno, Hideki Arimoto | 2020-10-27 |
| 10718798 | AC voltage detection device, image forming apparatus, and industrial machine | — | 2020-07-21 |
| 10268151 | Image forming apparatus having photoconductor and method of controlling the same | Masamitsu Takahashi, Masahito Hamaya, Hiroki Katoh, Yudai Minami | 2019-04-23 |
| 9658681 | Power supply system and image forming apparatus | — | 2017-05-23 |
| 9537419 | Power supply system and image forming apparatus having the same | — | 2017-01-03 |
| 9509219 | Power supply system, image forming apparatus having the power supply system, and control method of the power supply system | Hiroyuki Naganawa | 2016-11-29 |
| 9488944 | Power saving power supply system having a low-capacity power supply circuit for use in an image forming apparatus | — | 2016-11-08 |
| 9318964 | Power supply system, image forming apparatus having the same, and control method of the same | — | 2016-04-19 |
| 9268268 | Heating device controlling heating switch to perform switching action based on signal | Akihiro Shibasaki | 2016-02-23 |
| 9214835 | Power supply system, image forming apparatus having the power supply system, and control method of the power supply system | — | 2015-12-15 |
| 9209621 | Power supply system | — | 2015-12-08 |
| 9174458 | Heating device for detecting state of adjustment portion that adjusts period of connection with alternating current source | — | 2015-11-03 |
| 9151784 | AC voltage detecting circuit and image forming apparatus having the same | — | 2015-10-06 |
| 9130450 | Power supply system, image forming apparatus having the same, and low-capacity power supply circuit | — | 2015-09-08 |
| 9118252 | Switching power source, power-supply system and image forming apparatus | — | 2015-08-25 |
| 9084294 | Heating device and image forming apparatus | Hiroyuki Tsujihara, Tsuyoshi Maruyama | 2015-07-14 |
| 9041942 | Image forming apparatus | Masamitsu Takahashi | 2015-05-26 |
| 9030845 | Power supply system and image forming apparatus | — | 2015-05-12 |
| 9024614 | Power supply device performing voltage conversion | Tsuyoshi Maruyama | 2015-05-05 |
| 8965236 | Power supply system and image forming apparatus having the power supply system | — | 2015-02-24 |
| 8958713 | Power supply system and image forming apparatus having power supply system | — | 2015-02-17 |
| 8912468 | Zero-crossing detector circuit and image forming apparatus having the same | — | 2014-12-16 |
| 8913908 | Developing voltage control using a deboost circuit in an image forming apparatus | — | 2014-12-16 |
| 8903261 | Heating apparatus and image forming apparatus having the same | Tsuyoshi Maruyama | 2014-12-02 |
| 8879943 | Power supply system and image forming apparatus | — | 2014-11-04 |