- All sections
- E - Fixed constructions
- E02F - Dredgingsoil-shifting
- E02F 5/28 - Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other waters
Patent holdings for IPC class E02F 5/28
Total number of patents in this class: 130
10-year publication summary
|
10
|
10
|
14
|
15
|
20
|
11
|
20
|
14
|
10
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| China Harbour Engineering Company Ltd. | 99 |
9 |
| IHC Holland IE B.V. | 260 |
6 |
| Cashman Dredging and Marine Contracting, Co., LLC | 34 |
5 |
| Sea to Sky Energy Solutions Corp. | 7 |
5 |
| Jarala AS | 11 |
4 |
| Eddy Pump Corporation | 57 |
4 |
| Rotech Group Limited | 18 |
3 |
| Rotech Holdings Limited | 5 |
3 |
| Lake Restoration Solutions, Inc. | 4 |
3 |
| Tangshan Harbin Ship Technology Co., Ltd. | 204 |
3 |
| Yangtze River Nanjing Waterway Engineering Bureau | 11 |
3 |
| Harwich Haven Authority | 13 |
3 |
| CCCC National Engineering Research Center of Dredging Technology and Equipment Co., Ltd. | 32 |
3 |
| Granfoss AS | 6 |
3 |
| Tsinghua University | 6238 |
2 |
| Technip France | 674 |
2 |
| Guangdong Ocean University | 202 |
2 |
| Barrnon Ltd. | 5 |
2 |
| Przemyslowy Instytut Maszyn Rolniczych | 11 |
2 |
| Ellicott Dredge Technologies, LLC | 10 |
2 |
| Other owners | 61 |