- All sections
- E - Fixed constructions
- E04D - Roof coverings; sky-lights; gutters; roof-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: 283
10-year publication summary
|
24
|
27
|
19
|
26
|
41
|
20
|
37
|
37
|
22
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Owens Corning Intellectual Capital, LLC | 1456 |
58 |
| Bmic LLC | 630 |
58 |
| CertainTeed Corporation | 299 |
24 |
| Building Materials Investment Corporation | 158 |
15 |
| GAF Energy LLC | 139 |
13 |
| Nisshin Steel Co., Ltd. | 401 |
10 |
| Progressive Foam Technologies, Inc. | 81 |
9 |
| 3m Innovative Properties Company | 18406 |
7 |
| CertainTeed LLC | 511 |
7 |
| TAMKO Building Products LLC | 119 |
5 |
| Johns Manville | 980 |
4 |
| Dal-tile, LLC | 54 |
4 |
| Carlisle Intangible Company | 56 |
3 |
| Propst Family Limited Partnership | 15 |
3 |
| Carlisle Construction Materials, LLC | 79 |
3 |
| Freiborg, Mark | 3 |
3 |
| Holcim Technology Ltd. | 868 |
2 |
| Tegola Canadese SpA | 6 |
2 |
| Tesla, Inc. | 1519 |
2 |
| Beijing Hanergy Solar Power Investment Co., Ltd. | 40 |
2 |
| Other owners | 49 |