Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10724242 | Metal roofing material and roofing method | Kenichi Okubo, Motonori Kurotaki, Shuichi Sugita, Keiji Izumi, Tomoyuki Nagatsu +3 more | 2020-07-28 |
| 10597874 | Metal roofing material, and roofing structure and roofing method using same | Keiji Izumi, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo +1 more | 2020-03-24 |