- All sections
- E - Fixed constructions
- E04C - Structural elementsbuilding materials
- E04C 3/04 - JoistsGirders, trusses, or truss-like structures, e.g. prefabricatedLintelsTransoms of metal
Patent holdings for IPC class E04C 3/04
Total number of patents in this class: 669
10-year publication summary
|
81
|
72
|
88
|
97
|
78
|
49
|
56
|
52
|
45
|
33
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cemco, LLC | 127 |
19 |
| Simpson Strong-Tie Company, Inc. | 730 |
13 |
| Knauf Gips KG | 604 |
11 |
| Eaton Intelligent Power Limited | 6012 |
11 |
| Apache Industrial Services, Inc. | 47 |
8 |
| Nucor Corporation | 416 |
8 |
| BlueScope Buildings North America, Inc. | 81 |
7 |
| Paul Kristen, Inc. | 25 |
7 |
| Telling Industries, LLC | 17 |
7 |
| Fortress Iron, LP | 125 |
6 |
| Ultraframe (UK) Limited | 43 |
6 |
| Brandsafway Services LLC | 63 |
6 |
| The Boeing Company | 20098 |
5 |
| Bailey Metal Products Limited | 82 |
5 |
| HNTB Corporation | 6 |
5 |
| Konecranes Global Corporation | 479 |
5 |
| Paradigm Focus Product Development Inc. | 9 |
5 |
| Porta-Fab Corporation | 13 |
5 |
| Protektorwerk Florenz Maisch GmbH & Co. KG | 95 |
5 |
| Stonelake Pty Ltd | 11 |
5 |
| Other owners | 520 |