Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8782806 | Content usage managing apparatus, content usage managing method and program | Tetsuo Maruyama, Tetsu Sumita | 2014-07-15 |
| 8455887 | LED illumination device for reducing occurrence of color heterogeneity | Yoko Matsubayashi | 2013-06-04 |