- 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: 100
10-year publication summary
|
17
|
15
|
13
|
10
|
7
|
7
|
5
|
2
|
7
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Protektorwerk Florenz Maisch GmbH & Co. KG | 100 |
11 |
| Cemco, LLC | 132 |
9 |
| Opterus Research and Development, Inc. | 30 |
6 |
| Fortified Ipco, LLC | 59 |
5 |
| Brandsafway Services LLC | 68 |
4 |
| Bailey Metal Products Limited | 81 |
3 |
| Nucor Corporation | 417 |
3 |
| Oglaend System AS | 14 |
3 |
| Paradigm Focus Product Development Inc. | 8 |
3 |
| Eaton Intelligent Power Limited | 6257 |
3 |
| Juralco AS | 4 |
3 |
| J. Van Walraven Holding B.V. | 158 |
2 |
| Knauf Gips KG | 643 |
2 |
| Rockhouse International Pty Ltd | 5 |
2 |
| Groupe Bacacier | 4 |
2 |
| Nitiu AB | 7 |
2 |
| Illinois Tool Works Inc. | 11866 |
1 |
| ABB Schweiz AG | 7621 |
1 |
| Austin Building and Design Inc. | 13 |
1 |
| Casata Technologies Inc. | 8 |
1 |
| Other owners | 33 |