Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856754 | Concrete form shuttering having double woven fabric covering | Takayoshi Yokota, Sadao Uno, Kozo Katayama, Daijiro Tanabe | 1989-08-15 |
| 4848973 | Grout material and grouting method using same | Takayoshi Yokota, Kenji Kita | 1989-07-18 |
| 4787597 | Cloth faced form for forming concrete | Takayoshi Yokota, Kenjiroh Tanaka | 1988-11-29 |
| 4730805 | Form for forming concrete | Takayoshi Yokota, Kenjiroh Tanaka | 1988-03-15 |