- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 2/74 - Removable non-load-bearing partitionsPartitions with a free upper edge
Patent holdings for IPC class E04B 2/74
Total number of patents in this class: 1537
10-year publication summary
|
137
|
115
|
168
|
143
|
138
|
143
|
144
|
109
|
103
|
78
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hilti Aktiengesellschaft | 3535 |
71 |
| DIRTT Environmental Solutions, Ltd. | 310 |
63 |
| Cemco, LLC | 129 |
58 |
| Steelcase Inc. | 1321 |
45 |
| Knauf Gips KG | 617 |
41 |
| Krueger International, Inc. | 367 |
24 |
| DIRTT Environmental Solutions Inc. | 59 |
21 |
| Saint-Gobain Placo | 244 |
19 |
| Yoshino Gypsum Co., Ltd. | 253 |
18 |
| Won-Door Corporation | 105 |
16 |
| Okamura Corporation | 498 |
15 |
| Saint-Gobain Placo SAS | 158 |
15 |
| Fellowes, Inc. | 361 |
14 |
| Knoll, Inc. | 370 |
14 |
| MillerKnoll, Inc. | 527 |
14 |
| United States Gypsum Company | 905 |
13 |
| Innovative Building Technologies, LLC | 67 |
12 |
| Maars Holding B.V. | 39 |
12 |
| LG Electronics Inc. | 73772 |
11 |
| Allsteel LLC | 15 |
10 |
| Other owners | 1031 |