- All sections
- E - Fixed constructions
- E04F - Finishing work on buildings, e.g. stairs, floors
- E04F 11/022 - StairwaysLayouts thereof characterised by the supporting structure
Patent holdings for IPC class E04F 11/022
Total number of patents in this class: 50
10-year publication summary
|
5
|
3
|
9
|
11
|
8
|
5
|
5
|
6
|
10
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Emeh, Inc. | 87 |
6 |
| Anenda Systems Inc. | 23 |
3 |
| Construction & Design Solutions, Inc. | 6 |
3 |
| Patco, LLC | 43 |
3 |
| Svein Berg Holding AS | 21 |
3 |
| Big Time Investment, LLC | 37 |
3 |
| Oliver Technologies, Inc. | 10 |
2 |
| Prostairs Fitness, LLC | 7 |
2 |
| Calibre Enterprises Limited | 4 |
2 |
| UAB "archiprojektas" | 3 |
2 |
| The AZEK Group LLC | 419 |
2 |
| Toyota Motor Corporation | 36159 |
1 |
| Atlas Survival Shelters, LLC | 19 |
1 |
| Diamond Stairs Inc. | 4 |
1 |
| Esperire S.r.l. | 1 |
1 |
| LIXIL Corporation | 782 |
1 |
| Morryde International, Inc. | 44 |
1 |
| Plastedil S.A. | 8 |
1 |
| Nordex Energy Spain, S.A.U. | 179 |
1 |
| Platform Manufacturing Group | 1 |
1 |
| Other owners | 10 |