- All sections
- E - Fixed constructions
- E04D - Roof coveringssky-lightsguttersroof-working tools
- E04D 3/35 - Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation
Patent holdings for IPC class E04D 3/35
Total number of patents in this class: 280
10-year publication summary
|
22
|
30
|
32
|
21
|
29
|
32
|
24
|
13
|
27
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kingspan Research and Developments Limited | 27 |
16 |
| Bmic LLC | 805 |
16 |
| Rockwool A/S | 834 |
13 |
| Johns Manville | 921 |
10 |
| ArcelorMittal | 2672 |
8 |
| Kingspan Holdings (IRL) Limited | 484 |
8 |
| Louisiana-Pacific Corporation | 309 |
6 |
| Nisshin Steel Co., Ltd. | 382 |
6 |
| Jiangsu Canlon Building Materials Co., Ltd. | 92 |
6 |
| BlueScope Steel Limited | 211 |
5 |
| Siplast, Inc. | 17 |
5 |
| Carlisle Construction Materials, LLC | 175 |
5 |
| Amrize Technology Switzerland LLC | 717 |
5 |
| Continuus Materials Intellectual Property, LLC | 51 |
4 |
| ISOPAN S.p.A. | 20 |
3 |
| Pittsburgh Corning Europe NV | 28 |
3 |
| SABIC Global Technologies B.V. | 4597 |
3 |
| CertainTeed LLC | 640 |
3 |
| West.neder.land. Sandwich Panelen B.V. | 3 |
3 |
| BlueScope Buildings North America, Inc. | 84 |
2 |
| Other owners | 150 |