Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11831769 | Registration device, server device, searchable encryption system, and searchable encryption method | Takato Hirano, Yutaka Kawai | 2023-11-28 |
| 11824638 | Re-encryption device, method and computer readable medium to change the access range for ciphertext | Yutaka Kawai | 2023-11-21 |