- All sections
- E - Fixed constructions
- E04D - Roof coverings; sky-lights; gutters; roof-working tools
- E04D 11/00 - Roof covering, as far as not restricted to features covered by only one of groups ; Roof covering in ways not provided for by groups
Patent holdings for IPC class E04D 11/00
Total number of patents in this class: 150
10-year publication summary
18
|
23
|
26
|
12
|
10
|
20
|
22
|
16
|
9
|
8
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Bmic LLC | 630 |
7 |
Hanover Prest - Paving Company | 60 |
4 |
Holcim Technology Ltd. | 868 |
4 |
Permavoid Limited | 33 |
4 |
Dow Global Technologies LLC | 10147 |
3 |
Hortech, Inc. | 173 |
3 |
Zynnovation LLC | 11 |
3 |
A.B.G. Limited | 7 |
2 |
Bioroof Systems Inc. | 7 |
2 |
Building Materials Investment Corporation | 158 |
2 |
Esdec B.V. | 45 |
2 |
Isola AS | 13 |
2 |
J. Van Walraven Holding B.V. | 150 |
2 |
Johns Manville | 980 |
2 |
Mbrico, LLC | 16 |
2 |
Thomas & Betts International LLC | 528 |
2 |
Vaproshield, LLC | 64 |
2 |
Watershed Geosynthetics LLC | 78 |
2 |
ZinniaTek Limited | 57 |
2 |
Watershed Holdings LLC | 6 |
2 |
Other owners | 96 |