- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 1/21 - Connections specially adapted therefor
Patent holdings for IPC class E04B 1/21
Total number of patents in this class: 189
10-year publication summary
|
18
|
20
|
27
|
20
|
23
|
21
|
11
|
18
|
16
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Peikko Group Oy | 171 |
15 |
| Hainan University | 161 |
9 |
| Tindall Corporation | 50 |
9 |
| Svein Berg Holding AS | 20 |
6 |
| Euro Engineering Co., Ltd. | 10 |
6 |
| Seoul National University R&db Foundation | 3662 |
5 |
| South China University of Technology | 1794 |
4 |
| Elastic Potential, S.L. | 7 |
3 |
| Holmes Solutions Limited Partnership | 28 |
3 |
| Ruentex Engineering & Construction Co., Ltd. | 32 |
3 |
| ALP Supply, Inc. | 34 |
3 |
| Gruppo Piccini S.P.A. | 5 |
3 |
| China State Construction Engineering Corporation Limited | 26 |
3 |
| Cscon S.r.l. | 3 |
3 |
| Hilti Aktiengesellschaft | 3503 |
2 |
| Fundacion Tecnalia Research & Innovation | 219 |
2 |
| GS Engineering & Construction Corp. | 30 |
2 |
| Meadow Burke, LLC | 37 |
2 |
| Poseidon GT S.r.l. | 3 |
2 |
| Senvex Co., Ltd. | 22 |
2 |
| Other owners | 102 |