Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5421123 | Vegetation mat | Michihei Sakate, Tomofumi Matsumoto, Jungi Katayama, Nobumasa Mitunaga, Shunta Tada +2 more | 1995-06-06 |
| 5002427 | Hydrophobic material used for drainage of culvert | Masashi Shibata, Masaichi Sugimoto | 1991-03-26 |
| 4826350 | Method for constructing water-permeable sports surface and the like | — | 1989-05-02 |