- All sections
- E - Fixed constructions
- E04F - Finishing work on buildings, e.g. stairs, floors
- E04F 11/035 - Stairways consisting of a plurality of assembled modular parts without further support
Patent holdings for IPC class E04F 11/035
Total number of patents in this class: 59
10-year publication summary
|
9
|
7
|
8
|
5
|
5
|
4
|
10
|
7
|
10
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Emeh, Inc. | 87 |
4 |
| Prefabricated Design Systems, LLC | 11 |
4 |
| Safe Rack LLC | 55 |
3 |
| United Kingdom Atomic Energy Authority | 46 |
3 |
| Fortress Iron, LP | 29 |
2 |
| Signature Companies | 3 |
2 |
| Ecosourcen NV | 2 |
2 |
| Peter Spremulli | 2 |
2 |
| Easycore Co.,Ltd. | 2 |
2 |
| Albini & Fontanot S.p.A. | 3 |
1 |
| Anenda Systems Inc. | 23 |
1 |
| bullfrog International, L.C. | 85 |
1 |
| CSR Building Products Limited | 46 |
1 |
| Ekco Patent & IP Holdings Pty Ltd | 6 |
1 |
| Material Control, Inc. | 22 |
1 |
| Playstar, Inc. | 48 |
1 |
| PrimeSource Building Products, Inc. | 347 |
1 |
| Quicksmart Stairs International Pty Ltd | 2 |
1 |
| SafeRack, LLC | 34 |
1 |
| So.l.e.s. - Societa Lavori Edili e Serbatoi S.p.A. | 4 |
1 |
| Other owners | 24 |