Issued Patents 2019
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10519661 | Metal roofing material | Keiji Izumi, Yuugo Oota | 2019-12-31 |
| 10400455 | Metal roofing member, production method thereof, roofing structure and roofing method | Keiji Izumi, Yuugo Oota, Norimasa Miura, Katsunari Norita, Kenichi Okubo | 2019-09-03 |
| 10233645 | Metal roofing member, and roofing structure and roofing method using same | Keiji Izumi, Yuugo Oota, Norimasa Miura, Katsunari Norita, Kenichi Okubo | 2019-03-19 |
| D841192 | Roof board | Keiji Izumi, Yuugo Oota | 2019-02-19 |