Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8731188 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani, Taizo Shirai, Toru Akishita | 2014-05-20 |
| 8683236 | Outlet expansion appartus containing a delegate authentication unit to perform authentication of an electronic appliance with a power management apparatus | Masakazu Ukita, Yu Tanaka, Asami Yoshida, Tomoyuki Asano, Masanobu Katagi +2 more | 2014-03-25 |
| 8577023 | Encryption processing method, apparatus, and computer program utilizing different types of S-boxes | Taizo Shirai, Kyoji Shibutani, Toru Akishita | 2013-11-05 |
| 8396210 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani, Taizo Shirai, Toru Akishita | 2013-03-12 |
| 8379843 | Data converter, data conversion method, and computer program | Talzo Shirai, Kyoji Shibutani, Toru Akishita, Tetsu Iwata | 2013-02-19 |
| 8380683 | Data conversion device, data conversion method, and program | Taizo Shirai, Kyoji Shibutani, Toru Akishita, Tetsu Iwata | 2013-02-19 |
| 8369522 | Encryption processing apparatus, encryption method, and computer program | Taizo Shirai, Kyoji Shibutani, Toru Akishita | 2013-02-05 |
| 8364961 | Appliance authentication system, and method of controlling power supply | Yu Tanaka, Masakazu Ukita, Yohei Kawamoto, Seiichi Matsuda, Tomoyuki Asano +2 more | 2013-01-29 |
| 8290148 | Encryption processing apparatus, encryption processing method, and computer program | Toru Akishita, Taizo Shirai, Kyoji Shibutani | 2012-10-16 |
| 8205075 | Authentication device and method | Muneki Shimada, Kyoji Shibutani | 2012-06-19 |
| 8165288 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani, Taizo Shirai, Toru Akishita | 2012-04-24 |
| 8055953 | Information processing apparatus, information processing system, information processing method and computer program | Masafumi Kusakawa, Sumio Morioka, Muneki Shimada, Dai Sasaki | 2011-11-08 |
| 7949872 | Battery and authentication requesting device | Dai Sasaki | 2011-05-24 |
| 7864950 | Block encryption device using auxiliary conversion | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Kazumaro Aoki | 2011-01-04 |
| 7822196 | Block cipher apparatus using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Kazumaro Aoki | 2010-10-26 |
| 7760871 | Block cipher using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Kazumaro Aoki | 2010-07-20 |
| 7761707 | Recording medium, content player, content player method, and computer program | Muneki Shimada, Kazuhiro Kanee | 2010-07-20 |
| 7760870 | Block cipher apparatus using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Kazumaro Aoki | 2010-07-20 |
| 7697684 | Block cipher apparatus using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Kazumaro Aoki | 2010-04-13 |
| 7617395 | Battery and authentication requesting device | Dai Sasaki | 2009-11-10 |
| 7269529 | Data processing apparatus, program, and method for testing a secured circuit and maintaining confidentiality of the circuit | Masanobu Okabe, Masafumi Kusakawa, Kyoji Shibutani, Sumio Morioka, Asami Yoshida +1 more | 2007-09-11 |
| 7187769 | Method and apparatus for evaluating the strength of an encryption | Kazumaro Aoki, Masayuki Kanda, Youichi Takashima, Kazuo Ohta | 2007-03-06 |