- All sections
- E - Fixed constructions
- E04D - Roof coverings; sky-lights; gutters; roof-working tools
- E04D 3/30 - Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of metal
Patent holdings for IPC class E04D 3/30
Total number of patents in this class: 141
10-year publication summary
17
|
17
|
19
|
18
|
23
|
14
|
14
|
11
|
11
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
ArcelorMittal | 1887 |
9 |
BlueScope Steel Limited | 223 |
9 |
T&M Inventions, LLC | 29 |
9 |
Nisshin Steel Co., Ltd. | 401 |
8 |
RMH Tech LLC | 80 |
7 |
Budmat, Bogdan Wiecek | 8 |
6 |
Bmic LLC | 630 |
5 |
Rautaruukki Oyj | 161 |
4 |
Verco Decking, Inc. | 30 |
4 |
Nippon Steel Nisshin Co., Ltd. | 106 |
4 |
ArcelorMittal Investigacion y Desarrollo SL | 209 |
3 |
Bogdan Wiecek Budmat | 4 |
3 |
Englert, Inc. | 40 |
3 |
Nucor Corporation | 425 |
3 |
O'daniels, LLC. | 55 |
3 |
Building Research Systems, Inc. | 13 |
2 |
Kalzip GmbH | 27 |
2 |
Lester Building Systems, LLC | 16 |
2 |
SolarCity Corporation | 82 |
2 |
Lucas Holdings (Queensland) Pty. Ltd. | 5 |
2 |
Other owners | 51 |