Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11510256 | Configuration method of Wi-Fi doorbell, doorbell, housing complex communication system, and climate information providing system | Tetsuya Sumida | 2022-11-22 |
| 11100775 | Doorbell system, location notification system, and intercom system | Kazuma Wakabayashi | 2021-08-24 |
| 10841430 | Intercom system and data transfer method in said system | — | 2020-11-17 |
| 10757266 | Terminal device, and intercom system provided with terminal device | Akira Kai, Kenji Yasukawa | 2020-08-25 |
| 10721361 | Interphone system and setting apparatus | Yuta Shimomura | 2020-07-21 |
| 10652378 | Intercom system | Akira Kai, Yuta Shimomura | 2020-05-12 |
| 10616420 | Intercom system | Kenji Yasukawa, Hayato Takeya | 2020-04-07 |
| 10469669 | Intercom system | Syu Kumagai, Akira Kai | 2019-11-05 |
| 10334114 | Collective housing/building entrance device and entryphone system having that collective housing/building entrance device | Kenji Yasukawa | 2019-06-25 |
| 10298771 | Intercom system | Akira Kai, Yuuta Shimomura | 2019-05-21 |
| 7792259 | Collective housing intercom system | Yoshiyuki Hirahata | 2010-09-07 |