- All sections
- E - Fixed constructions
- E04D - Roof coveringssky-lightsguttersroof-working tools
- E04D 11/02 - Built-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition
Patent holdings for IPC class E04D 11/02
Total number of patents in this class: 243
10-year publication summary
|
20
|
26
|
16
|
29
|
25
|
29
|
33
|
25
|
27
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Holcim Technology Ltd. | 988 |
32 |
| Bmic LLC | 725 |
17 |
| Johns Manville | 953 |
10 |
| Sika Technology AG | 2854 |
7 |
| Rockwool A/S | 781 |
7 |
| Georgia-Pacific Gypsum LLC | 219 |
5 |
| Carlisle Intangible Company | 47 |
5 |
| Continuus Materials Intellectual Property, LLC | 48 |
5 |
| Milliken & Company | 1200 |
4 |
| Pittsburgh Corning Europe NV | 27 |
4 |
| U.S. Silica Company | 102 |
4 |
| Vaproshield, LLC | 67 |
4 |
| Carlisle Construction Materials, LLC | 139 |
4 |
| Dow Silicones Corporation | 1917 |
4 |
| Jiangsu Canlon Building Materials Co., Ltd. | 77 |
4 |
| CertainTeed Corporation | 251 |
3 |
| United States Gypsum Company | 903 |
3 |
| Vada, LLC | 11 |
3 |
| Carlisle Intangible, LLC | 68 |
3 |
| ROCKWOOL International A/S | 307 |
3 |
| Other owners | 112 |