Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5002427 | Hydrophobic material used for drainage of culvert | Hiroyuki Kambe, Masashi Shibata | 1991-03-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5002427 | Hydrophobic material used for drainage of culvert | Hiroyuki Kambe, Masashi Shibata | 1991-03-26 |