Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5729717 | IC card and issuing apparatus allowing multiple applications | Masuo Tamada, Shinsuke Tamura, Hiroshi Ozaki | 1998-03-17 |
| 4879645 | Data processing device with high security of stored programs | Masuo Tamada, Shinsuke Tamura, Hiroshi Ozaki | 1989-11-07 |
| 4771460 | Data processing terminal device which stores a modified decrypted data in a programmable read only memory in order to detect alteration thereof | Masuo Tamada, Shinsuke Tamura, Hiroshi Ozaki | 1988-09-13 |
| 4757543 | Encrypting and decrypting device which stores an algorithm in a memory | Masuo Tamada, Shinsuke Tamura, Hiroshi Ozaki | 1988-07-12 |
| 4748557 | Data processing terminal device for storing encrypted journal data and decrypting the data | Masuo Tamada, Shinsuke Tamura, Hiroshi Ozaki | 1988-05-31 |