- All sections
- E - Fixed constructions
- E04D - Roof coveringssky-lightsguttersroof-working tools
- E04D 3/28 - 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 glass
Patent holdings for IPC class E04D 3/28
Total number of patents in this class: 41
10-year publication summary
|
3
|
4
|
4
|
1
|
2
|
0
|
1
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dan-Pal | 25 |
10 |
| Sabic Innovative Plastics IP B.V. | 681 |
4 |
| SABIC Global Technologies B.V. | 4361 |
4 |
| F&S B.V | 61 |
4 |
| Kingspan Research and Developments Limited | 33 |
3 |
| CPI Daylighting, Inc. | 12 |
2 |
| Dott. Gallina SRL | 7 |
2 |
| Corning Incorporated | 10300 |
1 |
| DAe Han Steel Co., Ltd. | 1 |
1 |
| Danpal | 1 |
1 |
| Nucor Corporation | 419 |
1 |
| Bayer MaterialScience GmbH | 2 |
1 |
| Carbonara Rocco & C. SNC | 1 |
1 |
| G. Tröster E. K. | 5 |
1 |
| Gi-plast S.r.l. | 1 |
1 |
| Polimeros Gestion Industrial, S.L. | 6 |
1 |
| Renolit Ondex S.A.S. | 1 |
1 |
| Groupe Protection Securite | 1 |
1 |
| F&S B.V | 1 |
1 |
| Other owners | 0 |