Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7499541 | Cipher strength evaluation apparatus | Hidema Tanaka, Yasuo Hatano | 2009-03-03 |
| 7460665 | Cipher strength evaluation apparatus | Hidema Tanaka, Nobuyuki Sugio | 2008-12-02 |
| 7415616 | Cipher strength evaluation apparatus | Hidema Tanaka, Yasuo Hatano | 2008-08-19 |
| 7340053 | Cipher strength estimating device | Hidema Tanaka | 2008-03-04 |
| 7310421 | Particular plaintext detector | Hidema Tanaka, Nobuyuki Sugio | 2007-12-18 |