Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7864950 | Block encryption device using auxiliary conversion | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Shiho Moriai, Kazumaro Aoki | 2011-01-04 |
| 7822196 | Block cipher apparatus using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Shiho Moriai, Kazumaro Aoki | 2010-10-26 |
| 7760870 | Block cipher apparatus using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Shiho Moriai, Kazumaro Aoki | 2010-07-20 |
| 7760871 | Block cipher using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Shiho Moriai, Kazumaro Aoki | 2010-07-20 |
| 7697684 | Block cipher apparatus using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Shiho Moriai, Kazumaro Aoki | 2010-04-13 |
| 7187769 | Method and apparatus for evaluating the strength of an encryption | Shiho Moriai, Kazumaro Aoki, Youichi Takashima, Kazuo Ohta | 2007-03-06 |
| 6859818 | Method and apparatus for permuting input data and recording medium having stored thereon a program for executing permutation | Kazumaro Aoki, Hiroki Ueda | 2005-02-22 |
| 6850960 | Inverse calculation apparatus and recording medium having stored thereon a program for executing inverse calculation | Kazumaro Aoki, Hiroki Ueda | 2005-02-01 |
| 6769063 | Data converter and recording medium on which program for executing data conversion is recorded | Youichi Takashima, Kazumaro Aoki, Hiroki Ueda, Kazuo Ohta, Tsutomu Matsumoto | 2004-07-27 |
| 6578061 | Method and apparatus for data permutation/division and recording medium with data permutation/division program recorded thereon | Kazumaro Aoki, Hiroki Ueda | 2003-06-10 |
| 6204933 | Information print system and image processing apparatus | Eiji Yoshino, Hitoshi Tamura, Akira Sasaki, Hiroyuki Tadokoro, Nobuo Suzuki +6 more | 2001-03-20 |
| 6191868 | Distributed PWM halftoning unit and printer | Takeshi Shibuya, Tadashi Okada, Eiji Yoshino, Atsushi Onose, Tatsuki Inuzuka +1 more | 2001-02-20 |
| 6044463 | Method and system for message delivery utilizing zero knowledge interactive proof protocol | Kiyoshi Yamanaka, Youichi Takashima | 2000-03-28 |
| 6011848 | Method and system for message delivery utilizing zero knowledge interactive proof protocol | Kiyoshi Yamanaka, Youichi Takashima | 2000-01-04 |
| 5210822 | Storage control system for print image data | Tadashi Tsuchiya, Hirro Fujisaki | 1993-05-11 |