- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 2/44 - Walls having cavities between, as well as in, the elementsWalls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities using elements having specially designed means for stabilising the positionSpacers for cavity walls
Patent holdings for IPC class E04B 2/44
Total number of patents in this class: 40
10-year publication summary
|
8
|
5
|
11
|
4
|
3
|
0
|
0
|
3
|
0
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dean Holding Corporation | 14 |
4 |
| Keystone Retaining Wall Systems LLC | 218 |
3 |
| Les Materiaux de Construction Oldcastle Canada Inc. | 24 |
3 |
| Universite du Luxembourg | 120 |
2 |
| Rosenblatt Innovations LLC | 11 |
2 |
| Contern SA | 3 |
2 |
| Acefield Constructions Pty Ltd | 4 |
2 |
| Corning Incorporated | 10257 |
1 |
| 3B Construction Solutions, Inc. | 4 |
1 |
| Evolve Manufacturing, LLC | 3 |
1 |
| Hohmann & Barnard, Incorporated | 136 |
1 |
| Holcim Technology Ltd. | 991 |
1 |
| King Saud University | 404 |
1 |
| Lock-Block Ltd. | 31 |
1 |
| Metten Stein + Design GmbH & Co. KG | 47 |
1 |
| Mtec, LLC | 9 |
1 |
| Segi Synthetic Environment Co., Ltd. | 2 |
1 |
| Stala Integrated Assemblies, LLC | 5 |
1 |
| University of Manitoba | 449 |
1 |
| Dean Holding Co | 1 |
1 |
| Other owners | 9 |