- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 3/04 - Aerobic processes using trickle filters
Patent holdings for IPC class C02F 3/04
Total number of patents in this class: 236
10-year publication summary
|
28
|
20
|
18
|
22
|
24
|
34
|
26
|
20
|
15
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 914 |
14 |
| Atlantic Sapphire IP, LLC | 35 |
8 |
| Metawater Co., Ltd. | 194 |
7 |
| Imam Abdulrahman Bin Faisal University | 507 |
6 |
| Contech Engineered Solutions LLC | 278 |
4 |
| Stormtree Inc. | 10 |
4 |
| Bayer AG | 3323 |
3 |
| Advanced Drainage Systems, Inc. | 340 |
3 |
| BL Technologies, Inc. | 833 |
3 |
| Deutsches Zentrum für Luft- und Raumfahrt e.V. | 789 |
3 |
| IHI Corporation | 3414 |
3 |
| Oldcastle Infrastructure, Inc. | 108 |
3 |
| Lake Restoration Solutions, Inc. | 4 |
3 |
| DDP Specialty Electronic Materials US, LLC | 801 |
3 |
| Crosswater Systems, LLC | 3 |
3 |
| Rhizoscape Technologies Pty Ltd | 3 |
3 |
| Anua International LLC | 35 |
2 |
| Banner Environmental Engineering Consultants Ltd. | 4 |
2 |
| Cambrian Innovation Inc. | 27 |
2 |
| Chongqing University | 269 |
2 |
| Other owners | 155 |