- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 9/02 - Multistep treatment of water, waste water or sewage involving a separation step
Patent holdings for IPC class C02F 9/02
Total number of patents in this class: 403
10-year publication summary
|
27
|
30
|
33
|
41
|
30
|
49
|
20
|
1
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |