- All sections
- E - Fixed constructions
- E04C - Structural elementsbuilding materials
- E04C 2/04 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like materialBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of asbestos cement
Patent holdings for IPC class E04C 2/04
Total number of patents in this class: 910
10-year publication summary
|
95
|
74
|
86
|
87
|
74
|
51
|
49
|
68
|
61
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| United States Gypsum Company | 902 |
90 |
| Georgia-Pacific Gypsum LLC | 223 |
58 |
| CertainTeed Gypsum, Inc. | 216 |
40 |
| Knauf Gips KG | 634 |
38 |
| Saint-Gobain Placo SAS | 156 |
37 |
| Yoshino Gypsum Co., Ltd. | 263 |
26 |
| Gold Bond Building Products, LLC | 195 |
21 |
| DDP Specialty Electronic Materials US, LLC | 846 |
16 |
| Owens Corning Intellectual Capital, LLC | 1637 |
14 |
| Saint-Gobain Placo | 258 |
12 |
| USG Interiors, LLC | 313 |
12 |
| Knauf Gips KG | 81 |
10 |
| Triton Mgo Products, LLC | 21 |
9 |
| Shaw & Sons, Inc. | 37 |
5 |
| Akamai Materials, Inc. | 11 |
5 |
| Kanaflex Corporation | 19 |
4 |
| Ahlstrom Oyj | 189 |
4 |
| Etex Building Performance International SAS | 77 |
4 |
| 360° Ballistics, LLC | 16 |
4 |
| Proform Finishing Products, LLC | 36 |
4 |
| Other owners | 497 |