Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12113834 | Communication method, communication apparatus, and communication system | Kenjiro Arai, Kenichi Hiragi | 2024-10-08 |
| 12034776 | Communication method, communication apparatus, and communication system | Kenjiro Arai, Kenichi Hiragi | 2024-07-09 |
| 12028382 | Communication method, communication apparatus, and communication system | Kenjiro Arai, Kenichi Hiragi | 2024-07-02 |
| 11444858 | Disconnection monitoring terminating device and disconnection monitoring method | Kenjiro Arai | 2022-09-13 |
| 11201898 | SIP proxy server, communication method and SIP proxy program | Kenjiro Arai | 2021-12-14 |
| 11012478 | Communication method and communication program | Kenjiro Arai, Kenichi Hiragi | 2021-05-18 |