- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 9/32 - Translucent ceilings, i.e. permitting both the transmission and diffusion of light
Patent holdings for IPC class E04B 9/32
Total number of patents in this class: 74
10-year publication summary
|
14
|
12
|
6
|
8
|
8
|
1
|
2
|
1
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Normalu | 130 |
9 |
| Signify Holding B.V. | 8181 |
7 |
| Certainteed Canada, Inc. | 56 |
6 |
| Cooledge Lighting Inc. | 110 |
6 |
| Coelux S.r.l. | 95 |
5 |
| Apple Inc. | 59241 |
4 |
| Koninklijke Philips N.V. | 26042 |
4 |
| AFI Licensing LLC | 241 |
4 |
| Normalu SAS | 19 |
4 |
| Armstrong World Industries, Inc. | 370 |
3 |
| Knoll, Inc. | 359 |
2 |
| Novomatic AG | 1751 |
2 |
| Philips Lighting Holding B.V. | 1324 |
2 |
| Saint-Gobain Ecophon AB | 188 |
2 |
| USG Interiors, LLC | 319 |
2 |
| Koninklijke Philips Electronics N.V. | 7172 |
1 |
| Corning Incorporated | 10538 |
1 |
| Hubbell Incorporated | 3455 |
1 |
| GE Lighting Solutions, LLC | 177 |
1 |
| Hunter Douglas N.V. | 2 |
1 |
| Other owners | 7 |