- 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: 596
10-year publication summary
|
62
|
68
|
48
|
65
|
56
|
46
|
63
|
43
|
29
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AFI Licensing LLC | 231 |
81 |
| Armstrong World Industries, Inc. | 350 |
70 |
| USG Interiors, LLC | 308 |
48 |
| Saint-Gobain Ecophon AB | 180 |
30 |
| CertainTeed Ceilings Corporation | 105 |
19 |
| Turf Design, Inc. | 37 |
13 |
| Normalu | 138 |
12 |
| Rockwool A/S | 793 |
12 |
| Hunter Douglas Industries BV | 283 |
9 |
| ROCKWOOL International A/S | 304 |
9 |
| Kvadrat Soft Cells A/S | 16 |
9 |
| Certainteed Canada, Inc. | 58 |
8 |
| Knauf Gips KG | 607 |
7 |
| United States Gypsum Company | 905 |
7 |
| Beaulieu International Group NV | 94 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 31882 |
6 |
| Nut Shell LLC | 14 |
5 |
| FACT Design, LLC | 5 |
5 |
| Apple Inc. | 55446 |
4 |
| Axis Lighting Inc. | 80 |
4 |
| Other owners | 231 |