- All sections
- E - Fixed constructions
- E03F - Sewerscesspools
- E03F 5/20 - Siphon pipes or inverted siphons
Patent holdings for IPC class E03F 5/20
Total number of patents in this class: 15
10-year publication summary
|
2
|
0
|
2
|
0
|
0
|
4
|
4
|
1
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aiwell Holding AS | 7 |
3 |
| Physiclean Ltd. | 7 |
2 |
| VorTech Water Solutions Ltd | 10 |
2 |
| Siemens AG | 23996 |
1 |
| Ehl Limited | 3 |
1 |
| Jiangnan University | 1637 |
1 |
| Royal College of Art | 32 |
1 |
| Plantwork Systems Consulting LLP | 1 |
1 |
| Water Design Group Ltd | 1 |
1 |
| China Harbour Engineering Company Ltd. | 98 |
1 |
| Vortech Water Solutions | 1 |
1 |
| Other owners | 0 |