Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12321441 | Authentication apparatus, authentication method and program for generating a challenge in accordance with a state of challenge-response authentication with a client terminal | Takuma Koyama, Yasushi Okano, Masashi Tanaka | 2025-06-03 |
| 12316644 | Communication apparatus, external apparatus, communication system, communication method and program | Takuma Koyama, Masashi Tanaka, Yasushi Okano | 2025-05-27 |