- All sections
- E - Fixed constructions
- E02D - Foundationsexcavationsembankmentsunderground or underwater structures
- E02D 5/30 - Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
Patent holdings for IPC class E02D 5/30
Total number of patents in this class: 133
10-year publication summary
|
12
|
10
|
11
|
4
|
13
|
12
|
16
|
14
|
7
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ext Co., Ltd. | 11 |
4 |
| Nippon Steel Corporation | 6365 |
4 |
| Samil Engineering & Construction Co.,Ltd | 25 |
4 |
| Hubbell Incorporated | 3314 |
3 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
3 |
| Wobben Properties GmbH | 1219 |
3 |
| Halliburton Energy Services, Inc. | 20964 |
2 |
| A.H. Beck Foundation Company, Inc. | 3 |
2 |
| Conseil Service Investissements | 3 |
2 |
| Dalian University of Technology | 1531 |
2 |
| The Florida International University Board of Trustees | 625 |
2 |
| Geopier Foundation Company, Inc. | 145 |
2 |
| JFE Steel Corporation | 6965 |
2 |
| Soletanche Freyssinet | 481 |
2 |
| University of Washington through its Center for Commercialization | 507 |
2 |
| Qingdao University of Technology | 622 |
2 |
| Keltbray Limited | 5 |
2 |
| Chowa Kogyo Co., Ltd. | 3 |
2 |
| Pileforum Inc. | 2 |
2 |
| Leimet Oy | 4 |
2 |
| Other owners | 84 |