- All sections
- E - Fixed constructions
- E04F - Finishing work on buildings, e.g. stairs, floors
- E04F 17/02 - Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
Patent holdings for IPC class E04F 17/02
Total number of patents in this class: 46
10-year publication summary
|
3
|
3
|
3
|
9
|
4
|
3
|
10
|
3
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cheong GU Innovation Co.,Ltd. | 5 |
3 |
| Durasystems Barriers, Inc. | 13 |
2 |
| 3m Innovative Properties Company | 17957 |
1 |
| Hilti Aktiengesellschaft | 3383 |
1 |
| Barrette Outdoor Living, Inc. | 243 |
1 |
| C.E. Shepherd Company, L.P. | 4 |
1 |
| Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (ciemat) | 51 |
1 |
| Chimsoc Limited | 3 |
1 |
| Couto, WALLY | 1 |
1 |
| European Copper, LLC | 1 |
1 |
| Golden Rule Fasteners, Inc. | 4 |
1 |
| Hadek Protective Systems b.v. | 9 |
1 |
| Hangzhou Robam Appliances Co., Ltd. | 13 |
1 |
| Heat-Line Corporation | 31 |
1 |
| KOMPOZITOR Kft. | 3 |
1 |
| KOMPOZITOR Muanyagipari Fejleszto Kft. | 5 |
1 |
| Noritz Corporation | 262 |
1 |
| Ramsay, Linda | 6 |
1 |
| Ramsay, Serge | 5 |
1 |
| Rheem Manufacturing Company | 922 |
1 |
| Other owners | 23 |