- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 2/30 - Walls having cavities between, but not in, the elementsWalls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid using elements having specially designed means for stabilising the positionSpacers for cavity walls
Patent holdings for IPC class E04B 2/30
Total number of patents in this class: 86
10-year publication summary
|
9
|
5
|
10
|
3
|
0
|
2
|
8
|
2
|
2
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Johns Manville | 922 |
5 |
| Les Materiaux de Construction Oldcastle Canada Inc. | 25 |
4 |
| United States Gypsum Company | 938 |
4 |
| Hohmann & Barnard, Incorporated | 128 |
3 |
| Simpson Strong-Tie Company, Inc. | 745 |
3 |
| Cemco, LLC | 133 |
3 |
| Buildblock Building Systems, LLC | 23 |
2 |
| First National Bank of Pennsylvania | 5 |
2 |
| James Hardie Technology Limited | 458 |
2 |
| Sigma DEK Ltd. | 9 |
2 |
| Tubav Ventures Corp. | 3 |
2 |
| Acefield Constructions Pty Ltd | 4 |
2 |
| Buildgreen (Asia) Pte Ltd | 2 |
2 |
| Vandenbempt Patent BV | 4 |
2 |
| OMG Building Products LLC | 134 |
2 |
| SAFRAN S.A. | 794 |
1 |
| A. Raymond et Cie | 714 |
1 |
| Advanced Architectural Products, LLC | 78 |
1 |
| Airlite Plastics Co. | 96 |
1 |
| Cablofil, Inc. | 31 |
1 |
| Other owners | 41 |