- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 3/22 - Activated sludge processes using circulation pipes
Patent holdings for IPC class C02F 3/22
Total number of patents in this class: 138
10-year publication summary
|
15
|
18
|
13
|
9
|
11
|
13
|
9
|
7
|
7
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Oxymem Limited | 21 |
8 |
| Paques I.P. B.V. | 69 |
6 |
| Searen, LLC | 10 |
6 |
| Absolute Aeration | 7 |
4 |
| Novideas S.r.l. | 7 |
4 |
| Aqua-Aerobic Systems, Inc. | 87 |
3 |
| Suez International | 365 |
3 |
| Aquanos Energy Ltd. | 2 |
2 |
| BKT Co., Ltd. | 66 |
2 |
| Floating Island International, Inc. | 6 |
2 |
| H.C. Development S.r.l. | 2 |
2 |
| King Abdullah University of Science and Technology | 1838 |
2 |
| Kubota Corporation | 4258 |
2 |
| Pulsed Burst Systems, LLC | 5 |
2 |
| Tangent Company LLC | 16 |
2 |
| ThyssenKrupp AG | 3476 |
2 |
| ThyssenKrupp Industrial Solutions AG | 630 |
2 |
| KleanTu L.L.C. | 13 |
2 |
| Laguna Innovation Ltd. | 2 |
2 |
| Glade Holdings Ltd | 2 |
2 |
| Other owners | 78 |