- 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: 602
10-year publication summary
|
62
|
68
|
48
|
65
|
56
|
46
|
63
|
44
|
29
|
34
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AFI Licensing LLC | 235 |
82 |
| Armstrong World Industries, Inc. | 352 |
72 |
| USG Interiors, LLC | 310 |
48 |
| Saint-Gobain Ecophon AB | 182 |
30 |
| CertainTeed Ceilings Corporation | 106 |
19 |
| Turf Design, Inc. | 42 |
14 |
| Normalu | 135 |
12 |
| Rockwool A/S | 807 |
12 |
| Hunter Douglas Industries BV | 275 |
9 |
| ROCKWOOL International A/S | 299 |
9 |
| Kvadrat Soft Cells A/S | 16 |
9 |
| Certainteed Canada, Inc. | 59 |
8 |
| Knauf Gips KG | 617 |
8 |
| United States Gypsum Company | 905 |
7 |
| Beaulieu International Group NV | 95 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 32457 |
6 |
| Nut Shell LLC | 16 |
5 |
| FACT Design, LLC | 5 |
5 |
| Apple Inc. | 56283 |
4 |
| Axis Lighting Inc. | 79 |
4 |
| Other owners | 232 |