Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4700518 | Concrete panel having tile driven | Shigeyuki Akihama, Makoto Saito, Akio Kawamoto, Tadashi Banno, Takumi Nakamura | 1987-10-20 |
| 4522003 | Tiles and arrangement for setting tiles | Shigeyuki Akihama, Hajime Koizumi, Makoto Saito, Tadashi Banno, Shinya Tateno | 1985-06-11 |