Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6656579 | Concrete products for promotion of afforestation | Akira Kojima, Norihiko Hirano | 2003-12-02 |
| 4714423 | Evacuating device for plunger molding apparatus | Isao Hattori | 1987-12-22 |