- All sections
- E - Fixed constructions
- E04D - Roof coverings; sky-lights; gutters; roof-working tools
- E04D 13/12 - Devices or arrangements allowing walking on the roof or in the gutter
Patent holdings for IPC class E04D 13/12
Total number of patents in this class: 64
10-year publication summary
|
4
|
3
|
8
|
7
|
10
|
5
|
11
|
6
|
5
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kee Safety Limited | 83 |
7 |
| Phil Squared Roof Jack Systems LLC | 30 |
6 |
| CW Lundberg Industri AB | 5 |
5 |
| UniRac, Inc. | 174 |
4 |
| J. Van Walraven Holding B.V. | 150 |
3 |
| Steel Grip Samm, Inc. | 4 |
3 |
| Si.al. S.r.l. | 3 |
2 |
| Hilti Aktiengesellschaft | 3227 |
1 |
| Capital Safety Group (Northern Europe) Limited | 19 |
1 |
| CertainTeed Corporation | 299 |
1 |
| Clayco, Inc. | 5 |
1 |
| fischerwerke GmbH & Co. KG | 373 |
1 |
| Flesst B.V. | 3 |
1 |
| Gaines, Robert G. | 3 |
1 |
| The GSI Group, LLC | 104 |
1 |
| Hanover Prest - Paving Company | 60 |
1 |
| Holcim Technology Ltd. | 868 |
1 |
| Icopal SAS | 43 |
1 |
| Mario Lallier | 2 |
1 |
| Metal Works, Inc. | 12 |
1 |
| Other owners | 21 |