- All sections
- E - Fixed constructions
- E04C - Structural elementsbuilding materials
- E04C 3/09 - JoistsGirders, trusses, or truss-like structures, e.g. prefabricatedLintelsTransoms of metal with apertured web, e.g. with a web consisting of bar-like componentsHoneycomb girders at least partly of bent or otherwise deformed strip- or sheet-like material
Patent holdings for IPC class E04C 3/09
Total number of patents in this class: 103
10-year publication summary
|
12
|
17
|
15
|
13
|
10
|
7
|
7
|
5
|
2
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Protektorwerk Florenz Maisch GmbH & Co. KG | 93 |
11 |
| Cemco, LLC | 128 |
9 |
| Opterus Research and Development, Inc. | 31 |
6 |
| Fortress Iron, LP | 124 |
5 |
| Brandsafway Services LLC | 63 |
4 |
| Bailey Metal Products Limited | 82 |
3 |
| Nucor Corporation | 415 |
3 |
| Oglaend System AS | 14 |
3 |
| Paradigm Focus Product Development Inc. | 9 |
3 |
| Eaton Intelligent Power Limited | 5979 |
3 |
| Juralco AS | 4 |
3 |
| Dallan S.p.A. | 73 |
2 |
| J. Van Walraven Holding B.V. | 159 |
2 |
| Knauf Gips KG | 602 |
2 |
| Rockhouse International Pty Ltd | 5 |
2 |
| Groupe Bacacier | 4 |
2 |
| Nitiu AB | 6 |
2 |
| Wavebeam Limited | 2 |
2 |
| Illinois Tool Works Inc. | 11454 |
1 |
| Austin Building and Design Inc. | 15 |
1 |
| Other owners | 34 |