- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 9/04 - CeilingsConstruction of ceilings, e.g. false ceilingsCeiling construction with regard to insulation comprising slabs, sheets or the like
Patent holdings for IPC class E04B 9/04
Total number of patents in this class: 643
10-year publication summary
|
84
|
51
|
74
|
69
|
54
|
74
|
56
|
35
|
42
|
43
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AFI Licensing LLC | 242 |
88 |
| Armstrong World Industries, Inc. | 372 |
81 |
| USG Interiors, LLC | 318 |
50 |
| Saint-Gobain Ecophon AB | 190 |
31 |
| CertainTeed Ceilings Corporation | 109 |
21 |
| Turf Design, Inc. | 52 |
18 |
| Rockwool A/S | 845 |
15 |
| Normalu | 130 |
12 |
| Hunter Douglas Industries BV | 259 |
10 |
| Certainteed Canada, Inc. | 56 |
9 |
| ROCKWOOL International A/S | 275 |
9 |
| Kvadrat Soft Cells A/S | 16 |
9 |
| I4f Licensing NV | 368 |
9 |
| Knauf Gips KG | 648 |
8 |
| United States Gypsum Company | 949 |
7 |
| Arktura, LLC | 160 |
6 |
| Innovative Building Technologies, LLC | 66 |
6 |
| Nut Shell LLC | 18 |
6 |
| FACT Design, LLC | 5 |
5 |
| Apple Inc. | 59354 |
4 |
| Other owners | 239 |