- 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: 254
10-year publication summary
|
24
|
16
|
28
|
21
|
26
|
25
|
22
|
25
|
20
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Amrize Technology Switzerland LLC | 684 |
23 |
| Bmic LLC | 787 |
22 |
| Johns Manville | 934 |
10 |
| Holcim Technology Ltd. | 492 |
8 |
| Sika Technology AG | 2933 |
8 |
| Rockwool A/S | 814 |
8 |
| Georgia-Pacific Gypsum LLC | 221 |
5 |
| Carlisle Intangible Company | 44 |
5 |
| Carlisle Construction Materials, LLC | 164 |
5 |
| Jiangsu Canlon Building Materials Co., Ltd. | 91 |
5 |
| Continuus Materials Intellectual Property, LLC | 50 |
5 |
| Milliken & Company | 1161 |
4 |
| Pittsburgh Corning Europe NV | 28 |
4 |
| U.S. Silica Company | 110 |
4 |
| Vaproshield, LLC | 34 |
4 |
| Dow Silicones Corporation | 2025 |
4 |
| CertainTeed Corporation | 220 |
3 |
| Detec Systems LLC | 16 |
3 |
| Siplast, Inc. | 14 |
3 |
| United States Gypsum Company | 901 |
3 |
| Other owners | 118 |