Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8126202 | Digital watermark padding method, digital watermark padding device, digital watermark detecting method, digital watermark detecting device, and program | Takao Nakamura, Susumu Yamamoto, Ryo Kitahara, Takashi Miyatake, Hisato Miyachi | 2012-02-28 |
| 7970164 | Digital watermark padding method, digital watermark padding device, digital watermark detecting method, digital watermark detecting device, and program | Takao Nakamura, Susumu Yamamoto, Ryo Kitahara, Takashi Miyatake, Hisato Miyachi | 2011-06-28 |
| 7672474 | Electronic watermark embedding device, electronic watermark detection device, method thereof, and program | Takao Nakamura, Masashi Yamamuro | 2010-03-02 |
| 7489796 | Electronic watermark embedding device, electronic watermark detection device, method thereof, and program | Takao Nakamura, Masashi Yamamuro | 2009-02-10 |