- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 3/12 - Activated sludge processes
Patent holdings for IPC class C02F 3/12
Total number of patents in this class: 1836
10-year publication summary
|
147
|
155
|
113
|
157
|
122
|
125
|
104
|
101
|
101
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 924 |
70 |
| Kubota Corporation | 4170 |
48 |
| Kurita Water Industries Ltd. | 1248 |
45 |
| Veolia Water Solutions & Technologies Support | 535 |
45 |
| BL Technologies, Inc. | 842 |
37 |
| Mitsubishi Electric Corporation | 47461 |
28 |
| Toray Industries, Inc. | 7023 |
27 |
| Suez International | 360 |
23 |
| Organo Corporation | 532 |
20 |
| Kemira Oyj | 1236 |
18 |
| Hitachi, Ltd. | 15859 |
16 |
| HaskoningDHV Nederland B.V. | 75 |
16 |
| Metawater Co., Ltd. | 202 |
15 |
| Nanjing University | 771 |
15 |
| Ovivo Inc. | 156 |
13 |
| Praxair Technology, Inc. | 1252 |
13 |
| General Electric Company | 13811 |
12 |
| Anaergia Inc. | 107 |
12 |
| Invent Umwelt-und Verfahrenstechnik AG | 130 |
12 |
| Sumitomo Chemical Company, Limited | 9057 |
10 |
| Other owners | 1341 |