- All sections
- E - Fixed constructions
- E04F - Finishing work on buildings, e.g. stairs, floors
- E04F 21/08 - Mechanical implements
Patent holdings for IPC class E04F 21/08
Total number of patents in this class: 248
10-year publication summary
|
22
|
20
|
20
|
29
|
21
|
18
|
37
|
11
|
16
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Owens Corning Intellectual Capital, LLC | 1722 |
38 |
| CertainTeed LLC | 637 |
21 |
| JLG Industries, Inc. | 272 |
19 |
| Saint-Gobain Isover | 678 |
18 |
| Guangdong Bright Dream Robotics Co., Ltd. | 161 |
18 |
| Cnvs (assignment for The Benefit of Creditors), LLC | 19 |
17 |
| Johns Manville | 920 |
7 |
| Evolution Construction System, S.L. | 6 |
5 |
| Knauf Insulation, Inc. | 183 |
4 |
| Refractory Intellectual Property GmbH & Co. KG | 564 |
3 |
| Tape-Pro Drywall Tools Pty Limited | 8 |
3 |
| Projektselskabet AF Den 18 Februar 2015 ApS | 3 |
3 |
| Cleanfiber Inc. | 16 |
3 |
| Ames Tools Corporation | 108 |
3 |
| Rohm and Haas Company | 2946 |
2 |
| Dow Global Technologies LLC | 10930 |
2 |
| Axia Acquisition Corporation | 19 |
2 |
| Captive-Aire Systems, Inc. | 90 |
2 |
| CertainTeed Corporation | 206 |
2 |
| Feng Chia University | 57 |
2 |
| Other owners | 74 |