- All sections
- E - Fixed constructions
- E02B - Hydraulic engineering
- E02B 7/40 - Swinging or turning gates
Patent holdings for IPC class E02B 7/40
Total number of patents in this class: 76
10-year publication summary
|
13
|
15
|
10
|
7
|
4
|
3
|
4
|
1
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Zosen Corporation | 621 |
18 |
| Rubicon Research Pty Ltd. | 70 |
10 |
| Kansei Company | 6 |
6 |
| Nippon Koei Co., Ltd. | 17 |
6 |
| Tokyo Metropolitan Sewerage Service Corporation | 19 |
6 |
| Smart Vent Products LLC | 19 |
5 |
| Riverrestoration.org, LLC | 4 |
3 |
| Floodbreak, L.L.C. | 34 |
2 |
| The United States of America as represented by the Secretary of the Navy | 2735 |
1 |
| Alstom Hydro France | 38 |
1 |
| Enduro Composites, Inc. | 28 |
1 |
| Henry K. Obermeyer | 2 |
1 |
| Hydro Green Energy, LLC | 5 |
1 |
| J.F. Brennan Company, Inc. | 21 |
1 |
| Nehalem Marine Manufacturing | 1 |
1 |
| Reece Innovation Centre Limited | 5 |
1 |
| IRT & Associates, Inc. | 3 |
1 |
| Hiroko Terata | 2 |
1 |
| Nanjing Hydraulic Research Institute | 30 |
1 |
| Jae Ho Hwang | 1 |
1 |
| Other owners | 8 |