Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10590307 | Waterproof sheet and waterproof treatment | Takeshi Nakajima, Takashi Hagiwara, Hisaharu Yamaguchi, Masahiro YODA | 2020-03-17 |
| 9976056 | Waterproof sheet and waterproof treatment | Takeshi Nakajima, Takashi Hagiwara, Hisaharu Yamaguchi, Masahiro YODA | 2018-05-22 |