- All sections
- E - Fixed constructions
- E04D - Roof coverings; sky-lights; gutters; roof-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: 215
10-year publication summary
|
13
|
20
|
26
|
16
|
29
|
25
|
29
|
32
|
21
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Holcim Technology Ltd. | 868 |
22 |
| Bmic LLC | 630 |
14 |
| Johns Manville | 980 |
10 |
| Rockwool A/S | 753 |
6 |
| Georgia-Pacific Gypsum LLC | 204 |
5 |
| Carlisle Intangible Company | 56 |
5 |
| Sika Technology AG | 2650 |
5 |
| Continuus Materials Intellectual Property, LLC | 40 |
5 |
| Milliken & Company | 1253 |
4 |
| U.S. Silica Company | 99 |
4 |
| Vaproshield, LLC | 64 |
4 |
| Dow Silicones Corporation | 1664 |
4 |
| CertainTeed Corporation | 299 |
3 |
| Firestone Building Products Company, LLC | 100 |
3 |
| United States Gypsum Company | 1019 |
3 |
| Vada, LLC | 8 |
3 |
| Carlisle Intangible, LLC | 68 |
3 |
| ROCKWOOL International A/S | 323 |
3 |
| Remmers GmbH | 26 |
3 |
| CertainTeed LLC | 511 |
3 |
| Other owners | 103 |