Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6355100 | Corrosion inhibitor for cement compositions | Kenkichi Hamabe, Takeo Ozawa, Yuki HAGIWARA | 2002-03-12 |
| 5716448 | Hydraulic composite | Kanji Higaki, Satoshi Okazawa | 1998-02-10 |