- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 9/36 - Open-work ceilings, e.g. lattice type consisting of parallel slats
Patent holdings for IPC class E04B 9/36
Total number of patents in this class: 155
10-year publication summary
|
9
|
8
|
22
|
15
|
18
|
23
|
10
|
17
|
11
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AFI Licensing LLC | 226 |
31 |
| Armstrong World Industries, Inc. | 358 |
17 |
| Hunter Douglas Industries BV | 282 |
17 |
| USG Interiors, LLC | 307 |
16 |
| Saint-Gobain Ecophon AB | 176 |
10 |
| Turf Design, Inc. | 36 |
10 |
| CertainTeed Ceilings Corporation | 103 |
6 |
| Rockwool A/S | 783 |
6 |
| Cooledge Lighting Inc. | 109 |
4 |
| CSR Building Products Limited | 48 |
4 |
| 3form, LLC | 221 |
3 |
| AWI Licensing LLC | 138 |
3 |
| Arktura, LLC | 143 |
2 |
| Axis Lighting Inc. | 79 |
2 |
| Knauf Gips KG | 602 |
2 |
| Knoll, Inc. | 367 |
2 |
| Saint-Gobain Glass France | 3756 |
2 |
| Nut Shell LLC | 14 |
2 |
| USG Ceilings Plus, LLC | 14 |
2 |
| Caimi Brevetti S.p.A. | 24 |
1 |
| Other owners | 13 |