Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8064306 | Optical disc device and hybrid optical disc | Morio Nakatani, Keiji Horiuchi | 2011-11-22 |
| 7927043 | Rockbolts made of steel pipes | Tatsurou Iwasaki, Hiromichi Shiroma, Tetsuo Itou, Kenji Ooshima, Hiroyuki Tanase +3 more | 2011-04-19 |