Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7691467 | Gypsum board | Norio Tsuno, Seigo Ishibashi, Hirokuni Tani, Kenichiro Osawa | 2010-04-06 |
| 7686902 | Method of fabricating plaster board | Norio Tsuno, Seigo Ishibashi, Hirokuni Tani, Kenichiro Osawa | 2010-03-30 |