Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6336110 | System for solving of a constraint-satisfaction problem and constructing of a system | Tetsuo Hasegawa | 2002-01-01 |
| 6209019 | Data processing system, computer network, and data processing method | Yasukuni Okataku, Toshibumi Seki, Tetsuo Hasegawa, Hiroshi Kaibe | 2001-03-27 |
| 6178444 | System and method that prevent messages transferred among networked data processing systems from becoming out of sequence | Yasukuni Okataku, Hiroshi Kaibe | 2001-01-23 |
| 5729717 | IC card and issuing apparatus allowing multiple applications | Masuo Tamada, Hitoshi Kokuryo, Hiroshi Ozaki | 1998-03-17 |
| 5331647 | Communication apparatus having function to record communication history | Toshibumi Seki, Yasukuni Okataku | 1994-07-19 |
| 4879645 | Data processing device with high security of stored programs | Masuo Tamada, Hitoshi Kokuryo, 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, Hitoshi Kokuryo, Hiroshi Ozaki | 1988-09-13 |
| 4757543 | Encrypting and decrypting device which stores an algorithm in a memory | Masuo Tamada, Hitoshi Kokuryo, Hiroshi Ozaki | 1988-07-12 |
| 4748557 | Data processing terminal device for storing encrypted journal data and decrypting the data | Masuo Tamada, Hitoshi Kokuryo, Hiroshi Ozaki | 1988-05-31 |