- All sections
- E - Fixed constructions
- E02D - Foundationsexcavationsembankmentsunderground or underwater structures
- E02D 5/28 - Prefabricated piles made of steel
Patent holdings for IPC class E02D 5/28
Total number of patents in this class: 227
10-year publication summary
|
16
|
28
|
21
|
19
|
23
|
28
|
17
|
33
|
25
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pier Tech Systems, LLC | 22 |
10 |
| Nippon Steel Corporation | 6097 |
9 |
| Hubbell Incorporated | 3200 |
7 |
| American Piledriving Equipment, Inc. | 63 |
6 |
| Samil Engineering & Construction Co.,Ltd | 25 |
6 |
| Nippon Steel & Sumikin Metal Products Co., Ltd. | 34 |
5 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
5 |
| Itrec B.V. | 497 |
4 |
| JFE Steel Corporation | 6672 |
4 |
| Ojjo, Inc. | 112 |
4 |
| Weatherford Technology Holdings, LLC | 2008 |
3 |
| Anchor Systems (International) Limited | 4 |
3 |
| Elomatic Oy | 18 |
3 |
| Heerema Marine Contractors Nederland SE | 58 |
3 |
| innogy SE | 201 |
3 |
| Kubota Corporation | 3647 |
3 |
| Tiroler Rohre GmbH | 26 |
3 |
| Edelman Projects Pty Ltd | 3 |
3 |
| Allentown Infrastructure Group, LLC | 6 |
3 |
| A.H. Beck Foundation Company, Inc. | 3 |
2 |
| Other owners | 138 |