- All sections
- E - Fixed constructions
- E04F - Finishing work on buildings, e.g. stairs, floors
- E04F 11/02 - StairwaysLayouts thereof
Patent holdings for IPC class E04F 11/02
Total number of patents in this class: 170
10-year publication summary
|
19
|
21
|
29
|
29
|
23
|
15
|
12
|
15
|
15
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Safe Rack LLC | 55 |
9 |
| Emeh, Inc. | 87 |
8 |
| Imperial Pools, Inc. | 38 |
7 |
| SafeRack, LLC | 35 |
5 |
| Svein Berg Holding AS | 20 |
4 |
| Prest, J. David | 8 |
4 |
| Anenda Systems Inc. | 23 |
3 |
| Innovative Building Technologies, LLC | 66 |
3 |
| OB Development LLC | 3 |
3 |
| Maxu Technology Inc. | 13 |
3 |
| PERI SE | 438 |
3 |
| Casata Technologies Inc. | 8 |
2 |
| Inventio AG | 2411 |
2 |
| Lift-U, Division of Hogan Mfg., Inc. | 65 |
2 |
| Morryde International, Inc. | 44 |
2 |
| Peak Innovations Inc. | 162 |
2 |
| PrimeSource Building Products, Inc. | 349 |
2 |
| Quanta Associates, L.P. | 455 |
2 |
| Sekisui House, Ltd. | 279 |
2 |
| Sigma DEK Ltd. | 9 |
2 |
| Other owners | 100 |