Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6975730 | Method and apparatus for contents information | Toshio Kuroiwa, Takayuki Sugahara, Kenjiro Ueda, Seiji Higurashi | 2005-12-13 |
| 6891951 | Cryptosystem-related method and apparatus | Takayuki Sugahara, Toshio Kuroiwa, Kenjiro Ueda, Seiji Higurashi | 2005-05-10 |
| 6889323 | Method and apparatus for contents information | Takayuki Sugahara, Toshio Kuroiwa, Kenjiro Ueda, Seiji Higurashi | 2005-05-03 |
| 6889327 | Copyrighted digital data management method, contents provider, user terminal, and data recording medium | — | 2005-05-03 |