Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11438137 | Encryption device, decryption device, encryption method, decryption method, and computer readable medium | Yusuke Naito, Daisuke Suzuki | 2022-09-06 |
| 8948377 | Encryption device, encryption system, encryption method, and encryption program | Yoichi Shibata, Hirosato Tsuji | 2015-02-03 |
| 8443020 | Pseudo random number generator | — | 2013-05-14 |
| 7864950 | Block encryption device using auxiliary conversion | Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki | 2011-01-04 |
| 7822196 | Block cipher apparatus using auxiliary transformation | Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki | 2010-10-26 |
| 7760870 | Block cipher apparatus using auxiliary transformation | Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki | 2010-07-20 |
| 7760871 | Block cipher using auxiliary transformation | Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki | 2010-07-20 |
| 7697684 | Block cipher apparatus using auxiliary transformation | Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki | 2010-04-13 |
| 7639800 | Data conversion device and data conversion method | Tomomi Kasuya, Tetsuya Ichikawa | 2009-12-29 |
| 7096369 | Data transformation apparatus and data transformation method | Toshio Tokita | 2006-08-22 |
| 6687728 | Method and apparatus for arithmetic operation and recording medium of method of operation | — | 2004-02-03 |
| 6687727 | Method and apparatus for arithmetic operation and recording medium of method of operation | — | 2004-02-03 |
| 6477556 | Method and apparatus for arithmetic operation and recording medium of method of operation | — | 2002-11-05 |
| 6466669 | Cipher processor, IC card and cipher processing method | Toshio Tokita | 2002-10-15 |
| 6415030 | Data transformation apparatus and data transformation method | Toshio Tokita | 2002-07-02 |
| 6201869 | Data transformation apparatus and data transformation method | Toshio Tokita | 2001-03-13 |
| 5712861 | Error correcting method and decoder with improved reliability | Tohru Inoue, Ken Onishi, Sadayuki Inoue | 1998-01-27 |
| 5488661 | Data communication system and method with data scrambling | — | 1996-01-30 |
| 5261003 | Data communication system and method with data scrambling | — | 1993-11-09 |
| 4991100 | Method for computing a value of speed from a pulse signal | — | 1991-02-05 |
| 4961475 | Cruise control system | Norimitsu Kurihara, Masahiko Asakura, Hidehiko Anzai | 1990-10-09 |
| 4924397 | Vehicle cruise control system | Norimitsu Kurihara, Masahiko Asakura, Yasuhiko Otsuka, Kazuhiko Tachikawa | 1990-05-08 |