Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8017533 | Steel plate reinforcing sheet | Takio Itou, Hiroichi Ukei, Manabu Matsunaga | 2011-09-13 |
| 6805953 | Waterstop sealing material | Katsuhiko Tachibana, Masahiko Ando, Yasuyuki Tokunaga, Manabu Matsunaga | 2004-10-19 |