- All sections
- E - Fixed constructions
- E04C - Structural elementsbuilding materials
- E04C 3/28 - JoistsGirders, trusses, or truss-like structures, e.g. prefabricatedLintelsTransoms of materials not covered by groups
Patent holdings for IPC class E04C 3/28
Total number of patents in this class: 107
10-year publication summary
|
13
|
19
|
22
|
14
|
10
|
15
|
5
|
5
|
2
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Renco World Corporation | 15 |
9 |
| Opterus Research and Development, Inc. | 31 |
6 |
| SA EXEL Industries | 13 |
3 |
| Sunbelt Rentals, Inc. | 88 |
3 |
| Technische Universiteit Delft | 723 |
3 |
| Isotruss Industries LLC | 10 |
3 |
| Auburn University | 501 |
2 |
| FiberCore IP B.V. | 26 |
2 |
| HRL Laboratories, LLC | 1599 |
2 |
| Hunter Douglas Industries BV | 285 |
2 |
| L'Garde, Inc. | 41 |
2 |
| Nama Development LLC | 4 |
2 |
| Universiteit Gent | 1329 |
2 |
| University of Canterbury | 30 |
2 |
| Uhcs Property SA | 11 |
2 |
| Startlink Systems Ltd | 2 |
2 |
| Wavebeam Limited | 2 |
2 |
| The Boeing Company | 20025 |
1 |
| Airbus Operations GmbH | 3325 |
1 |
| Mitsubishi Chemical Corporation | 4492 |
1 |
| Other owners | 55 |