Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9459192 | Water absorption test method and water absorption test device for concrete surface | Kazuhiko Hayashi | 2016-10-04 |
| 8105433 | Cement admixture, and cement composition and concrete containing the cement admixture | Toshiharu Kishi, Tae-Ho Ahn, Kaoru Kobayashi | 2012-01-31 |