- All sections
- E - Fixed constructions
- E04F - Finishing work on buildings, e.g. stairs, floors
- E04F 11/025 - Stairways having stringers
Patent holdings for IPC class E04F 11/025
Total number of patents in this class: 79
10-year publication summary
|
7
|
2
|
10
|
12
|
6
|
7
|
13
|
4
|
14
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Safe Rack LLC | 55 |
8 |
| Fortified Ipco, LLC | 59 |
6 |
| PERI SE | 438 |
4 |
| Emeh, Inc. | 87 |
3 |
| Fortress Iron, LP | 23 |
3 |
| Peak Innovations Inc. | 162 |
3 |
| Case-modular Stair Systems Inc. | 3 |
2 |
| Oliver Technologies, Inc. | 10 |
2 |
| PrimeSource Building Products, Inc. | 347 |
2 |
| Signature Companies | 3 |
2 |
| Nxgen Homes Pty Ltd | 4 |
2 |
| Beckm, LLC | 2 |
1 |
| Casata Technologies Inc. | 8 |
1 |
| Eco Sports Group, Inc., DBA Livin The Dog Life | 43 |
1 |
| Intelligent Engineering (Bahamas) Limited | 17 |
1 |
| Jiangsu Huning Steel; Mechanism Co., Ltd | 12 |
1 |
| Jonathan Hyams | 1 |
1 |
| Kee Safety Limited | 89 |
1 |
| Metaltech-Omega Inc. | 26 |
1 |
| Miro Industries, Inc. | 28 |
1 |
| Other owners | 33 |