Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5033231 | Net for grassing | Michihei Sakate, Katsumi Tamura, Tomofumi Matsumoto | 1991-07-23 |
| 5002427 | Hydrophobic material used for drainage of culvert | Hiroyuki Kambe, Masaichi Sugimoto | 1991-03-26 |
| 4812339 | Artificial soil and construction of bed soil for putting green using artificial soil | Iwao Hayakawa, Tokimasa Hayashibara | 1989-03-14 |