- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 3/20 - Activated sludge processes using diffusers
Patent holdings for IPC class C02F 3/20
Total number of patents in this class: 597
10-year publication summary
|
57
|
57
|
63
|
54
|
51
|
47
|
42
|
29
|
34
|
34
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BL Technologies, Inc. | 838 |
24 |
| Metawater Co., Ltd. | 204 |
11 |
| Prosper Technologies, LLC | 32 |
11 |
| Invent Umwelt-und Verfahrenstechnik AG | 125 |
10 |
| Fluence Water Products and Innovation Ltd | 24 |
10 |
| Enviromix, Inc. | 20 |
9 |
| Kurita Water Industries Ltd. | 1298 |
9 |
| SSI Aeration, Inc. | 16 |
9 |
| AQUACONSULT Anlagenbau GmbH | 15 |
8 |
| Kubota Corporation | 4465 |
8 |
| BKT Co., Ltd. | 69 |
7 |
| Tomorrow Water | 19 |
7 |
| General Electric Company | 14021 |
6 |
| Artemis Rubber Technology Inc. | 21 |
6 |
| Doosan Heavy Industries & Construction Co., Ltd. | 580 |
6 |
| Membion GmbH | 26 |
6 |
| Xylem Water Solutions U.S.A., Inc. | 37 |
6 |
| Absolute Aeration | 7 |
5 |
| Bionest Technologies Inc. | 27 |
5 |
| Somerset Environmental Solutions Inc. | 6 |
5 |
| Other owners | 429 |