- All sections
- E - Fixed constructions
- E04D - Roof coveringssky-lightsguttersroof-working tools
- E04D 1/28 - Roofing elements comprising two or more layers, e.g. for insulation
Patent holdings for IPC class E04D 1/28
Total number of patents in this class: 284
10-year publication summary
|
19
|
26
|
41
|
20
|
37
|
37
|
23
|
24
|
25
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bmic LLC | 810 |
68 |
| Owens Corning Intellectual Capital, LLC | 1734 |
49 |
| CertainTeed Corporation | 204 |
17 |
| CertainTeed LLC | 654 |
15 |
| Building Materials Investment Corporation | 135 |
14 |
| GAF Energy LLC | 198 |
14 |
| Nisshin Steel Co., Ltd. | 381 |
10 |
| 3m Innovative Properties Company | 17463 |
6 |
| TAMKO Building Products LLC | 185 |
5 |
| Progressive Foam Technologies, Inc. | 70 |
4 |
| Carlisle Construction Materials, LLC | 183 |
4 |
| Dal-tile, LLC | 79 |
4 |
| Carlisle Intangible Company | 40 |
3 |
| Johns Manville | 917 |
3 |
| Propst Family Limited Partnership | 14 |
3 |
| Tesla, Inc. | 2072 |
3 |
| Tegola Canadese SpA | 5 |
2 |
| Beijing Hanergy Solar Power Investment Co., Ltd. | 40 |
2 |
| Nippon Steel Nisshin Co., Ltd. | 98 |
2 |
| Tegola Canadese SRL | 11 |
2 |
| Other owners | 54 |