Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7975145 | Apparatus and program for update of time stamp | — | 2011-07-05 |
| 7890764 | System, apparatus, program and method for obtaining time stamp | — | 2011-02-15 |
| 7873168 | Secret information management apparatus and secret information management system | Masamichi Tateoka | 2011-01-18 |