- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 2/46 - 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 by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
Patent holdings for IPC class E04B 2/46
Total number of patents in this class: 56
10-year publication summary
|
13
|
8
|
5
|
5
|
10
|
9
|
4
|
5
|
7
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Les Materiaux de Construction Oldcastle Canada Inc. | 26 |
4 |
| Keystone Retaining Wall Systems LLC | 207 |
3 |
| Anchor Wall Systems, Inc. | 182 |
2 |
| Convergent Market Research, Inc. | 9 |
2 |
| Daysh Developments, Inc., DBA California Retaining Walls Co. | 13 |
2 |
| Fastbrick IP Pty Ltd | 115 |
2 |
| Stone Strong LLC | 10 |
2 |
| Anchor Wall Systems Limited | 16 |
2 |
| Zhangjiagang Elegant Home-tech Co., Ltd | 5 |
2 |
| Andersen Corporation | 279 |
1 |
| Design Flow Pty Ltd | 1 |
1 |
| Geovent LLC | 1 |
1 |
| Hohmann & Barnard, Incorporated | 134 |
1 |
| Huber Engineered Woods LLC | 95 |
1 |
| Junker Holding GmbH | 1 |
1 |
| Lrm Industries, LLC | 9 |
1 |
| Maguinness, Elizabeth | 1 |
1 |
| Oldcastle Building Products Canada, Inc. | 172 |
1 |
| Piazza Stone, LLC | 7 |
1 |
| Poundfield Products Limited | 5 |
1 |
| Other owners | 24 |