- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 9/28 - Connection of slabs, sheets or the like to the supporting construction with the slabs, sheets or the like having grooves engaging with horizontal flanges of the supporting construction or accessory means connected thereto
Patent holdings for IPC class E04B 9/28
Total number of patents in this class: 109
10-year publication summary
|
15
|
8
|
13
|
17
|
21
|
9
|
7
|
4
|
3
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AFI Licensing LLC | 240 |
29 |
| Armstrong World Industries, Inc. | 369 |
10 |
| Saint-Gobain Ecophon AB | 184 |
10 |
| Hunter Douglas Industries BV | 262 |
9 |
| CertainTeed Ceilings Corporation | 110 |
6 |
| USG Interiors, LLC | 314 |
4 |
| Certainteed Canada, Inc. | 56 |
3 |
| Innovative Building Technologies, LLC | 66 |
3 |
| Jlc-tech IP LLC | 27 |
3 |
| Nut Shell LLC | 18 |
3 |
| CSR Building Products Limited | 45 |
2 |
| Embassy Ceiling Inc. | 3 |
2 |
| Knauf Gips KG | 643 |
2 |
| USG Interiors, Inc. | 42 |
2 |
| Les Plafonds Embassy Inc. / Embassy Ceiling Inc. | 9 |
2 |
| Astra Technologies UK LLP | 2 |
2 |
| MA, Zili | 3 |
2 |
| Advanced Architectural Products, LLC | 78 |
1 |
| AES Clean Technology, Inc. | 39 |
1 |
| AS America, Inc. | 1041 |
1 |
| Other owners | 12 |