- 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: 266
10-year publication summary
|
21
|
21
|
26
|
28
|
16
|
25
|
25
|
23
|
11
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kingspan Research and Developments Limited | 34 |
18 |
| Bmic LLC | 735 |
16 |
| Johns Manville | 959 |
10 |
| Rockwool A/S | 784 |
10 |
| Kingspan Holdings (IRL) Limited | 440 |
8 |
| ArcelorMittal | 2293 |
6 |
| Holcim Technology Ltd. | 998 |
6 |
| Louisiana-Pacific Corporation | 265 |
6 |
| Nisshin Steel Co., Ltd. | 394 |
6 |
| BlueScope Steel Limited | 210 |
5 |
| Carlisle Construction Materials, LLC | 140 |
4 |
| Continuus Materials Intellectual Property, LLC | 46 |
4 |
| ISOPAN S.p.A. | 20 |
3 |
| Pittsburgh Corning Europe NV | 27 |
3 |
| SABIC Global Technologies B.V. | 4351 |
3 |
| Siplast, Inc. | 10 |
3 |
| ROCKWOOL International A/S | 305 |
3 |
| Jiangsu Canlon Building Materials Co., Ltd. | 83 |
3 |
| West.neder.land. Sandwich Panelen B.V. | 3 |
3 |
| BlueScope Buildings North America, Inc. | 80 |
2 |
| Other owners | 144 |