Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9446380 | Water-blocking filler and filler for engineered multi-barriers using said water-blocking filler | Kenichiro Nakarai, Kiyoshi Koibuchi | 2016-09-20 |
| 8647015 | Artificial multi-barrier for a radioactive waste treatment facility | Kenichiro Nakarai, Kiyoshi Koibuchi | 2014-02-11 |
| 8133317 | Cement additive and cement composition | Hiroshi Hirao, Kazuo Yamada, Kiyoshi Koibuchi | 2012-03-13 |