- All sections
- E - Fixed constructions
- E04B - General building constructions; walls, e.g. partitions; roofs; floors; ceilings; insulation or other protection of buildings
- E04B 2/28 - Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid
Patent holdings for IPC class E04B 2/28
Total number of patents in this class: 58
10-year publication summary
|
12
|
7
|
5
|
2
|
5
|
3
|
2
|
2
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Keene Building Products Co., Inc. | 31 |
4 |
| Covestro LLC | 577 |
2 |
| Evolve Manufacturing, LLC | 3 |
2 |
| Innovative Building Technologies, LLC | 70 |
2 |
| James Hardie Technology Limited | 462 |
2 |
| Simpson Strong-Tie Company, Inc. | 583 |
2 |
| Universita degli Studi di Padova | 246 |
2 |
| LG Electronics Inc. | 69257 |
1 |
| Carrier Corporation | 4759 |
1 |
| Acciona Infraestructuras, S.A. | 13 |
1 |
| Anchor Wall Systems, Inc. | 227 |
1 |
| Aspenson, Mark A. | 1 |
1 |
| AUS Group Alliance Pty Ltd | 9 |
1 |
| Benjamin Obdyke Incorporated | 48 |
1 |
| Composite Technologies Corporation | 12 |
1 |
| Ecoraw, s.r.o. | 4 |
1 |
| FERO Corporation | 44 |
1 |
| Forma-tech Pty Ltd | 1 |
1 |
| Herron Intellectual Property Holdings, LLC | 6 |
1 |
| Inteplast Group Corporation | 257 |
1 |
| Other owners | 29 |