- 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: 49
10-year publication summary
|
4
|
4
|
3
|
7
|
8
|
6
|
4
|
5
|
5
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
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 |
| Oliver Technologies, Inc. | 11 |
3 |
| Patco, LLC | 52 |
3 |
| Svein Berg Holding AS | 20 |
3 |
| Big Time Investment, LLC | 39 |
3 |
| Prostairs Fitness, LLC | 8 |
2 |
| Calibre Enterprises Limited | 3 |
2 |
| UAB "archiprojektas" | 3 |
2 |
| Toyota Motor Corporation | 32450 |
1 |
| Atlas Survival Shelters, LLC | 13 |
1 |
| Diamond Stairs Inc. | 5 |
1 |
| Esperire S.r.l. | 1 |
1 |
| LIXIL Corporation | 700 |
1 |
| Piscines Desjoyaux SA | 15 |
1 |
| Plastedil S.A. | 8 |
1 |
| Nordex Energy Spain, S.A.U. | 124 |
1 |
| Platform Manufacturing Group | 1 |
1 |
| Sea Top Homes Ltd. | 6 |
1 |
| Other owners | 9 |