- 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: 163
10-year publication summary
|
18
|
18
|
17
|
24
|
21
|
20
|
13
|
8
|
13
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Emeh, Inc. | 87 |
8 |
| Imperial Pools, Inc. | 38 |
7 |
| Safe Rack LLC | 52 |
6 |
| SafeRack, LLC | 33 |
5 |
| Prest-o-fit Manufacturing, Inc. | 9 |
4 |
| Svein Berg Holding AS | 20 |
4 |
| Anenda Systems Inc. | 23 |
3 |
| Innovative Building Technologies, LLC | 67 |
3 |
| OB Development LLC | 3 |
3 |
| Maxu Technology Inc. | 13 |
3 |
| PERI SE | 439 |
3 |
| Casata Technologies Inc. | 10 |
2 |
| Inventio AG | 2380 |
2 |
| Lift-U, Division of Hogan Mfg., Inc. | 67 |
2 |
| PrimeSource Building Products, Inc. | 286 |
2 |
| Quanta Associates, L.P. | 429 |
2 |
| Sekisui House, Ltd. | 204 |
2 |
| Sigma DEK Ltd. | 10 |
2 |
| Signature Companies | 3 |
2 |
| Prostairs Fitness, LLC | 8 |
2 |
| Other owners | 96 |