Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6894860 | Recording medium and apparatus for protecting copyrighted digital data | Etsurou Sakamoto | 2005-05-17 |
| 6891224 | Semiconductor device | Tsuneo Ogura, Tomoki Inoue, Hideaki Ninomiya | 2005-05-10 |
| 6873485 | Recording medium and apparatus for protecting copyrighted digital data | Etsurou Sakamoto | 2005-03-29 |