Issued Patents All Time
Showing 1–25 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9509492 | Authentication device, output device, verification device and input device | Ben Smyth, Yoshikazu Hanatani | 2016-11-29 |
| 9280518 | Public key cryptography computing device | Tomoko Yonemura, Yoshikazu Hanatani | 2016-03-08 |
| 8934631 | Decompressing apparatus and compressing apparatus | Yoshikazu Hanatani, Taichi Isogai, Tomoko Yonemura | 2015-01-13 |
| 8924448 | Arithmetic device, method, and program product | Taichi Isogai, Kenichiro Furuta, Kenji Ohkuma, Tomoko Yonemura, Yoshikazu Hanatani +3 more | 2014-12-30 |
| 8782114 | Arithmetic device | Tomoko Yonemura, Taichi Isogai, Atsushi Shimbo, Yoshikazu Hanatani, Kenichiro Furuta +3 more | 2014-07-15 |
| 8675874 | Apparatus for performing data compression processing using algebraic torus | Tomoko Yonemura, Atsushi Shimbo, Kenji Ohkuma, Taichi Isogai, Yuichi Komano +2 more | 2014-03-18 |
| 8543630 | Exponentiation calculation apparatus and method for calculating square root in finite extension field | Tomoko Yonemura, Atsushi Shimbo, Kenji Ohkuma, Taichi Isogai, Yuichi Komano +2 more | 2013-09-24 |
| 8533243 | Representation converting apparatus, arithmetic apparatus, representation converting method, and computer program product | Tomoko Yonemura, Kenji Ohkuma, Hanae Ikeda, Taichi Isogai, Kenichiro Furuta +1 more | 2013-09-10 |
| 8438205 | Exponentiation calculation apparatus and method for calculating square root in finite extension field | Tomoko Yonemura, Atsushi Shimbo, Kenji Ohkuma, Taichi Isogai, Yuichi Komano +2 more | 2013-05-07 |
| 8233616 | Apparatus and computer program product for performing data compression processing using algebraic torus | Tomoko Yonemura, Atsushi Shimbo, Kenji Ohkuma, Taichi Isogai, Yuichi Komano +3 more | 2012-07-31 |
| 7826637 | Digital watermark embedding apparatus, digital watermark detecting apparatus, digital watermark embedding method, digital watermark detecting method and computer program product | — | 2010-11-02 |
| 7646882 | Digital watermark embedding apparatus, method and program, and digital watermark detection apparatus, method and program | — | 2010-01-12 |
| 7624273 | Code generating method and unit thereof, code detecting method and unit thereof, and watermark embedding unit and watermark detecting unit | — | 2009-11-24 |
| 7613320 | Digital watermark embedding apparatus and method, and digital watermark analysis apparatus, method and program | — | 2009-11-03 |
| 7578000 | Rendering device, recording device, copy control method, and program | Toru Kambayashi, Tomoo Yamakage, Hisashi Yamada | 2009-08-18 |
| 7443999 | Digital watermark embedding apparatus and method, and digital watermark analysis apparatus, method and program | — | 2008-10-28 |
| 7346777 | Identification information embedding apparatus and identification information analysis apparatus | — | 2008-03-18 |
| 7305085 | Encryption apparatus and method, and decryption apparatus and method based on block encryption | Kenji Ohkuma, Fumihiko Sano, Shinichi Kawamura | 2007-12-04 |
| 7227948 | Encryption apparatus and method, and decryption apparatus and method based on block encryption | Kenji Ohkuma, Shinichi Kawamura, Fumihiko Sano | 2007-06-05 |
| 7209556 | Encryption apparatus and method, and decryption apparatus and method based on block encryption | Kenji Ohkuma, Shinichi Kawamura, Fumihiko Sano | 2007-04-24 |
| 7194090 | Encryption apparatus, decryption apparatus, expanded key generating apparatus and method therefor, and recording medium | Masahiko Motoyama, Kenji Ohkuma, Fumihiko Sano, Shinichi Kawamura | 2007-03-20 |
| 7123744 | Digital watermark embedding method, digital watermark embedding apparatus, digital watermark detecting method, and digital watermark detecting apparatus | Tooru Kambayashi, Tomoo Yamakage, Shinichiro Koto, Tomoya Kodama, Hisashi Yamada | 2006-10-17 |
| 7099493 | Digital watermark detecting device and method thereof | — | 2006-08-29 |
| 7082537 | Code generating method and unit thereof, code detecting method and unit thereof, and watermark embedding unit and watermark detecting unit | — | 2006-07-25 |
| 6985602 | Electronic watermark detection apparatus and method | — | 2006-01-10 |