Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1043794 | Projector | — | 2024-09-24 |
| D1039585 | Video camera | Kunio Yamada | 2024-08-20 |
| D1028063 | Projector | — | 2024-05-21 |
| D1027002 | Projector | — | 2024-05-14 |
| D1016045 | Microphone | — | 2024-02-27 |
| D1016047 | Microphone stand base | — | 2024-02-27 |
| D860288 | Surveillance camera | Takehito Katori | 2019-09-17 |
| D848984 | Wireless microphone | — | 2019-05-21 |
| D834563 | Wireless microphone | — | 2018-11-27 |
| D730427 | Projector | Takashi Tsukahara, Keiji Yuyama | 2015-05-26 |
| D710331 | Remote controller for projector | Keiji Yuyama, Takashi Tsukahara | 2014-08-05 |
| D695331 | Projector | — | 2013-12-10 |
| D688724 | Projector | Takashi Tsukahara, Sadayoshi Azuma, Keiji Yuyama, Hiroshi Chino, So Suzuki +2 more | 2013-08-27 |