Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11261603 | Metallic roof material and roofing method using same | Keiji Izumi, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita | 2022-03-01 |
| 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 |
| 10519661 | Metal roofing material | Keiji Izumi, Tomoyuki Nagatsu | 2019-12-31 |
| 10400455 | Metal roofing member, production method thereof, roofing structure and roofing method | Keiji Izumi, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo | 2019-09-03 |
| 10233645 | Metal roofing member, and roofing structure and roofing method using same | Keiji Izumi, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo | 2019-03-19 |
| D841192 | Roof board | Keiji Izumi, Tomoyuki Nagatsu | 2019-02-19 |