Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5476718 | Compound water-sealing sealant | Isamu Ichizuka, Shuitsu Takahashi, Kouzi Hara, Hiroshi Waki, Shinji Kobe +3 more | 1995-12-19 |
| 5444128 | Water-sealing sheet | Isamu Ichizuka, Shuitsu Takahashi, Kouzi Hara, Hiroshi Waki, Shinji Kobe +3 more | 1995-08-22 |