Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7958370 | System and device for managing control data | Tatsuya Hirai | 2011-06-07 |
| 7953098 | Method for limiting utilizing terminal of contents, and storage device and system for method | Tatsuya Hirai | 2011-05-31 |
| 7937766 | Method and system for preventing simultaneous use of contents in different formats derived from the same content at a plurality of places | Yukihide Inagaki, Shuichi Miyazaki | 2011-05-03 |