- All sections
- E - Fixed constructions
- E04G - Scaffoldingformsshutteringbuilding implements or aids, or their usehandling building materials on the siterepairing, breaking-up or other work on existing buildings
- E04G 11/28 - Climbing forms, i.e. forms which are not in contact with the poured concrete during lifting from layer to layer
Patent holdings for IPC class E04G 11/28
Total number of patents in this class: 135
10-year publication summary
|
8
|
12
|
15
|
20
|
7
|
19
|
10
|
11
|
12
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| PERI SE | 439 |
21 |
| Doka GmbH | 170 |
15 |
| PERI GmbH | 159 |
10 |
| Apache Industrial Services, Inc. | 48 |
9 |
| Hunnebeck GmbH | 39 |
5 |
| PERI AG | 21 |
5 |
| Inventio AG | 2413 |
4 |
| Forming Concepts, Inc. | 6 |
4 |
| Shaanxi Yufeng Construction Machinery Co., Ltd. | 4 |
4 |
| ULMA C y E, S. Coop. | 108 |
3 |
| HWS Concrete Towers S.L. | 10 |
3 |
| Despe S.p.A. | 17 |
2 |
| Doka Industrie GmbH | 30 |
2 |
| Wilian Holding Company | 42 |
2 |
| PERI Formwork Systems, Inc. | 6 |
2 |
| Forsa S.A. | 5 |
2 |
| China Construction Third Bureau First Engineering Co., Ltd. | 14 |
2 |
| China Construction Third Engineering Bureau Group Co., Ltd | 31 |
2 |
| China Nuclear Power Engineering Co., Ltd. | 301 |
1 |
| Dayton Superior Corporation | 102 |
1 |
| Other owners | 36 |